Eclipse Gun Co. Hercules 12 Gauge Antique Side-by-Side Double-Barrel Break-Action Hammer Shotgun, Belgian Proofed, 27 in. Compressed Steel, Double Triggers
This antique Eclipse Gun Co. Hercules, in a side-by-side double-barrel configuration, stands out with Belgian proof marks, compressed steel construction, and clear top rib rollmarks citing Patent 488366 dated December 20, 1892. It features external hammers, double triggers, and a matted top rib with a single front bead. Matching serial numbers are observed on the action and forend, and the walnut stock retains hand checkering with a steel buttplate. Capacity is 2.
Condition
Overall Condition: Poor condition.
Bore Overall Condition: Fair - Generally clean, some residue or smudges, slight corrosion.
Bore Rifling: Not applicable - smoothbore.
Specific Condition Notes: The barrel fit is very loose and the locking mechanism is very worn, and this should be addressed before use. The left firing pin is functional while the right firing pin is seized. There are cracks in the stock behind the rear tang; reinforcement by pinning or replacement is recommended.
What’s Included
- Eclipse Gun Co. Hercules 12 Gauge shotgun
Belgian manufacture is confirmed by the "BELGIUM" marking and inspector/proof stamps on the flats, placing this Hercules in the late 1890s to WWI era. Its antique status aligns with the period and construction details.
The matted top rib is marked "ECLIPSE HERCULES," "PATENT 488366 DEC 20 1892," and "COMPRESSED STEEL," and carries a single front bead for a straightforward sight picture. These rollmarks and rib treatment are defining visual elements of the gun.
It uses a side-by-side break-action with external hammers and double triggers, and has a capacity of 2. The barrel length is 27 inches, with compressed steel construction noted on the rib. A forend latch release is fitted for takedown and maintenance.
The walnut stock features a pistol-grip profile with hand checkering, paired with a steel buttplate that includes an oval medallion. Length of pull measures 14.0 inches, providing a classic fit consistent with the era.
Matching serial numbers are observed on the action and forend, adding coherence to the assembly. Additional period-correct details such as the proof stamps and rib markings contribute to its clear historical context.