Original Item: Only One Available. This is an exceptionally rare John Walch Patent .36-caliber Navy revolver featuring one of the most unusual repeating-firearm mechanisms developed before the American Civil War. Although the cylinder has only six chambers, each chamber was designed to hold two superimposed powder-and-ball loads, giving the revolver an extraordinary capacity of twelve shots.

Bearing the extremely low matching serial number 20 on the grip, right hammer, and cylinder, this appears to be a very early production example. It is also unmarked on the barrel, a scarce configuration reported on some early Walch revolvers. Approximately 200 of the large .36-caliber twelve-shot revolvers are believed to have been manufactured, making surviving examples exceedingly difficult to obtain.

The Walch Revolver

John Walch patented his superimposed-load revolver design in 1859. The patent describes an elongated revolving cylinder in which two separate charges could be loaded one ahead of the other within each chamber. Separate ignition channels, percussion nipples, hammers, and triggers allowed the front and rear loads to be fired independently.

The .36-caliber Walch Navy revolver used a six-chambered cylinder, but each chamber accepted two loads for a total capacity of twelve shots. The smaller Walch revolver used a five-chamber cylinder and could hold ten charges.

The term “Navy” refers primarily to the revolver’s .36-caliber size and general configuration, following the period convention established by other medium-frame percussion revolvers. It does not indicate that this model was purchased under a documented U.S. Navy contract.

John Walch did not operate a large manufacturing facility of his own. Production of the twelve-shot revolver was contracted to the Union Knife Company of Naugatuck, Connecticut. Contemporary and collector sources generally estimate that only approximately 200 examples were completed, probably during the period from 1859 through the early Civil War years.

Ingenious Twelve-Shot Mechanism

At first glance, the Walch resembles a conventional Colt-style single-action percussion revolver. Closer examination reveals that almost every important firing component is duplicated.

The revolver has two hammers, two triggers, and two percussion nipples for each cylinder chamber. One nipple ignites the rear charge in the conventional manner, while the second is offset and connected to a channel that carries the percussion flash forward to the front load.

The right trigger is positioned ahead of the left trigger and is intended to release the hammer associated with the forward charge. The second trigger then releases the hammer for the rear charge.

This arrangement permitted twelve shots to be carried in a revolver of relatively conventional size. It also made correct loading and operation considerably more complicated than with an ordinary cap-and-ball revolver.

The Superimposed-Load System

To load the revolver to its full intended capacity, a powder charge and projectile were seated deeply into each elongated chamber. A second powder charge and projectile were then loaded ahead of the first.

The two loads had to be sealed and separated carefully so that the ignition of the front charge would not communicate with the rear charge. Contemporary descriptions indicate that specially designed projectiles and sealing materials were intended to help isolate the loads.

Correct ignition sequence was essential. The forward charge was intended to fire before the rear charge. A misfire, improperly sealed projectile, blocked ignition passage, or incorrect trigger sequence could potentially create a hazardous condition.

The complexity of loading, sealing, capping, cocking, and firing two charges within each chamber likely contributed to the revolver’s poor commercial reception. Although the system increased capacity dramatically, it did so at the cost of simplicity and confidence in operation.

The Walch therefore represents a fascinating example of a mechanically ingenious idea that did not ultimately displace the more straightforward percussion revolver.

Serial or Assembly Number 20

The bottom of the grip is marked within the engraved decoration with what appears to be: 20. The zero is unusually rounded and may have been formed using two curved impressions. The same number appears on the right side of the right hammer and on the front face of the cylinder. The repetition of the number on multiple fitted components strongly suggests that it served as the revolver’s serial or primary assembly number.

No corresponding number was observed on the grip frame beneath the stocks.

Because very early firearms were sometimes marked inconsistently and because surviving reference information is limited, the identification of 20 as the serial number cannot be stated with absolute certainty. However, the matching markings across the grip, hammer, and cylinder provide compelling evidence that this is an extremely early numbered example.

Early Unmarked Configuration

No manufacturer’s name, patent marking, or barrel address could be located. This absence does not necessarily indicate that the markings were removed. Reference sources report that some very early Walch Navy revolvers were produced without the more commonly encountered barrel address.

The metal surfaces should still be inspected carefully under varying light and magnification, as extremely faint markings can sometimes become obscured by oxidation, cleaning, or finish loss. At present, however, this example is best described as an early unmarked variation.

The barrel measures approximately 5 7/8 inches, slightly shorter than the nominal six-inch length generally associated with this model. Similar minor barrel-length variations have been observed on surviving examples.

Acanthus-Engraved Grip Frame

The grip frame is decorated with attractive acanthus-leaf engraving, giving the revolver a more refined appearance than a plain utilitarian sidearm.

The serial number 20 is located within this engraved area on the bottom of the grip.

The decorative work remains visible despite age, handling, oxidation, and finish loss. It adds considerably to the revolver’s display appeal and provides an elegant contrast with the highly experimental mechanical design.

Period Replacement Grips

The wooden grips remain in very good overall condition but appear to be old replacements rather than the revolver’s original factory-fitted stocks.

They fit the frame relatively well and display the color, wear, and patina of considerable age. There are no major cracks, missing sections, or obvious modern repairs.

The replacement grips do not bear visible matching numbers.

Although not original to the revolver, they are visually appropriate and appear to have been fitted during its earlier working or collecting history rather than recently.

Metal Condition

The revolver has developed an attractive, untouched-looking brown and gray patina.

The cylinder shows the heaviest exposure, with overall oxidation, scattered peppering, and areas of shallow pitting. This may indicate that the revolver was stored in a damp environment or left for a long period in a leather holster.

The frame displays less oxidation than the cylinder, while the barrel remains the cleanest of the major components. The varying condition of the surfaces gives the revolver a convincing aged appearance and does not suggest recent refinishing.

The original finish is no longer present in any significant amount. The steel now displays mottled gray, brown, and dark coloration with scattered areas of roughness and old corrosion.

Despite the oxidation, the revolver remains structurally complete and highly impressive in appearance.

Mechanical Condition

The action functions relatively well for such a complicated and scarce experimental revolver.

Cocking the hammers rotates and indexes the cylinder, and the two hammers align reasonably well with their corresponding percussion nipples. The triggers release the hammers in the expected sequence.

The cylinder stop or locking system is extremely weak, worn, or possibly incomplete. The cylinder therefore does not lock as securely as it should.

Because of the unusual double-hammer and double-trigger arrangement, the mechanism should be operated only slowly and gently. The revolver should not be repeatedly cocked or dry fired.

No attempt should be made to load or fire the revolver. Its superimposed-charge system is inherently complex, and the condition of its chambers, ignition passages, nipples, locks, and cylinder cannot be considered safe for use.

Bore Condition

The bore is in very good condition for a percussion revolver of this age and scarcity.

It retains a partially bright surface with crisp, clearly visible lands and grooves. There is scattered oxidation and discoloration, but no severe bore damage was observed.

The corrosion appears more consistent with moisture exposure and imperfect cleaning than with extremely heavy firing.

The strong rifling adds considerably to the revolver’s condition and collector appeal, even though it is sold strictly as a historical artifact and should never be fired.

Civil War Significance

The Walch Navy revolver was developed immediately before the Civil War, during a period of intense experimentation in American repeating firearms. Designers were seeking ways to increase capacity and speed of fire while remaining limited by percussion ignition and loose powder-and-ball ammunition.

Walch’s solution was among the most ambitious. By loading two charges into each chamber, he doubled the capacity of a conventional six-shot revolver without doubling the cylinder’s diameter.

The concept was ingenious but introduced significant practical disadvantages. Loading was slow and complicated, the ignition system required additional nipples and channels, and reliable separation of the two charges was essential.

These limitations prevented the design from achieving widespread acceptance, but they also make the Walch one of the most technically fascinating revolvers of the Civil War era.

The approximately 200 large-frame examples were commercially produced rather than manufactured under a known military contract. Some may have been carried privately during the Civil War, but no specific wartime use or military association is documented for this revolver.

Collector Significance

Walch twelve-shot revolvers rank among the rarest and most recognizable American percussion handguns.

Their scarcity is matched by their extraordinary mechanical appearance. The elongated cylinder, double hammers, double triggers, paired nipples, engraved grip frame, and twelve-shot capacity make the design immediately compelling even to collectors already familiar with conventional Civil War revolvers.

This example is especially desirable because of its extremely low matching number 20, scarce unmarked early configuration, attractive engraved grip frame, functional action, strong rifled bore, and honest untouched patina.

The period replacement grips and weak cylinder locking system are fully disclosed, but neither significantly reduces the historical importance or display value of such an exceptionally rare revolver.

This is the first original Walch twelve-shot Navy revolver we have had the opportunity to offer. With only approximately 200 believed to have been produced, many advanced Civil War and American arms collectors may never encounter another available example.

A remarkable early twelve-shot percussion revolver whose extremely low matching number, experimental superimposed-charge mechanism, and extraordinary rarity make it a centerpiece-level acquisition for an advanced collection of Civil War arms, American revolvers, or mechanical firearms innovations.

Specifications:
Manufacturer: Produced for John Walch Firearms Company, Reportedly by Union Knife Company
Place of Manufacture: Naugatuck, Connecticut
Model: Walch Navy Twelve-Shot Revolver
Probable Serial or Assembly Number: 20
Period of Manufacture: Circa 1859–1862
Estimated Production: Approximately 200
Caliber: .36
Ammunition Type: Loose Powder and Ball with Percussion Caps
Loading System: Two Superimposed Charges per Chamber
Cylinder Capacity: Six Chambers
Maximum Intended Capacity: Twelve Shots
Number of Hammers: Two
Number of Triggers: Two
Percussion Nipples: Twelve, Two per Chamber
Barrel Length: Approximately 5 7/8"
Nominal Barrel Length: Approximately 6"
Overall Length: Approximately 12"
Action: Single-Action Revolving Percussion Mechanism
Barrel Markings: None Located
Grip Frame Decoration: Acanthus-Leaf Engraving
Numbered Components: Grip, Right Hammer and Cylinder Marked 20
Grips: Period Wooden Replacements
Mechanical Condition: Action Functions and Indexes; Cylinder Locking System Very Weak, Worn or Incomplete
Bore Condition: Partly Bright with Crisp Lands and Grooves and Scattered Oxidation
Exterior Condition: Brown and Gray Patina with Heavier Cylinder Oxidation, Peppering and Areas of Pitting

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