Mainspring 1873, 1894, 1892, and 53 Winchester ORIGINAL

This is an ORIGINAL Mainspring (also called hammer spring (mainspring)) for 1873, 1892 and 1894 (pre-64) and model 53 Winchester lever action rifles. Spring that puts tension on the hammer when cocked. This mainspring is attached by Screw wp47 as used 1892 and 1894, and model 53, while part 621A is the mainspring screw 1873 model.