This Springfield Armory manufactured early variation hinge pin is for the trapdoor rifle and carbine in 45-70 Govt. caliber and is in very good condition exhibiting a grayish brown patina with light wear.  (file photo)

Note: early variation hinge pins measure approximately 1.24" in length and are found on rifles and carbine with the narrower receivers having serial numbers below circa 100,000.

Note: U.S. Springfield Armory model 1873 trapdoor firearms with the following serial numbers have been observed with this part: 89587