Original Item: Only One Available. This is a very unusual mid 19th century Mexican bronze explosive shell, weighing approximately 5.6 pounds and measuring roughly 5 1/2 inches in diameter. The piece has long been identified as a Mexican artillery projectile and is particularly interesting because of the old inscription on its underside referencing Michoacán, Mexico.

Bronze explosive shells are documented in early 19th century Mexican military inventories. Archaeological work at the Mexican Army position at Palo Alto, for example, has documented a spherical bronze howitzer shell and notes that an 1833 Mexican Army artillery inventory specifically listed bronze shells. Houston Archeological Society This makes the bronze construction of the present example entirely plausible for Mexican ordnance of the general period, although its precise model, artillery piece, and date cannot presently be established.

The shell measures approximately:

5 1/2 inches in diameter

and weighs:

5.6 pounds

The exterior has a heavily oxidized and weathered surface with substantial scuffing and wear throughout. There is also considerable old tape residue across the body, which may be removable with careful conservation.

The fuze opening retains fragments of wood along its interior edges, showing that a wooden component was once fitted into the opening. A separate old wooden plug is presently sitting inside the shell along with modern packing material. This plug could potentially be repositioned in the opening for display, although we cannot confirm that it is the original fuze plug belonging to this particular shell.

The underside bears an old hand inscription reading approximately:

SPANISH
Fort Micheaocan
Mexico

The second line appears intended to reference Michoacán, although the spelling is irregular.

We have been unable to identify a specific military installation formally known as “Fort Michoacán.” Michoacán was, however, an area of considerable military activity during the first half of the 19th century, including the Mexican War of Independence and the Mexican-American War period. Historical sources document numerous fortified positions and military operations throughout the state rather than a single installation carrying that exact name. Lugares INAH

For that reason, the inscription should be treated as an old collector or recovery notation rather than proof that the shell came from a fort formally named “Fort Michoacán.” It could refer more generally to a fortification or recovery location somewhere within Michoacán.

Mexican artillery of the 1830s and 1840s included a mixture of older Spanish colonial equipment, domestically produced arms, and imported materiel. Bronze remained an important artillery material during the period. Mortars and howitzers fired hollow spherical shells containing explosive charges, with wooden fuzes inserted into openings in the shell body. Mortars in particular were intended to throw explosive shells on a high trajectory against fortifications and troops behind cover. Naval History and Heritage Command

The shell remains in rough but very evocative condition. Heavy oxidation, scratches, surface wear, tape residue, and the remnants of wood within the fuze opening all attest to considerable age and a long post service history.

A fascinating early Mexican artillery relic with unusual bronze construction and an intriguing old Michoacán, Mexico inscription, offering considerable potential for further research.