November 28, 2018 10:00 AM EST Cincinnati


US Model 1888 Trapdoor Pressure Test Rifle

.45-70 caliber, 32.625" barrel with two barrel bands, S/N 556677. Blued and color case hardened finish, smooth walnut stock. Standard Springfield lock markings and barrel proofs, 1884 marked breech bock, SWP cartouche partially obscured on reverse of stock with date illegible from an impact mark. [Circle]-P proof behind triggerguard worn with pin hole in it. Low arch breech, grooved trigger, 3-click tumbler. Correct Buffington rear sight, front sight, ramrod bayonet and bayonet mounting system removed. Rifle has been modified as a pressure testing rifle with an arsenal assemblage that operates a bottom mounted gas release valve. The upper portion of the testing fixture appears to be missing a piece that would cover the muzzle, which would absorb the pressure blast and operate the rod. Added iron staple behind triggerguard may be part of a cable based remote firing mechanism. It is likely that this system was used test gun powder strength and may have been used in testing cartridges for the transition to smokeless powder. An ultimate rarity for the Trapdoor collector, and possibly the only one in private hands or possibly still surviving.


Very good. Retains some blue, mixed with an oxidized blue patina. Markings remain clear, mechanically functional, stock with scattered bumps and dings from use.

Estimate: $1,500 - $2,500
Price Realized Including Buyer's Premium

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