.69 caliber. 42" barrel secured by three flat spring-retained bands. NSN. Bright finish, iron furniture, walnut stock. Single shot percussion alteration of a smoothbore flintlock muzzleloading musket. Lock with US/{Spread-Winged Eagle} forward of the hammer and marked in three vertical lines at the tail HARPERS/FERRY/1837. Breech plug tang dated 1836, breech with V/P/{Eagle Head} inspection marks. Counterpane with weak block letter AR/V AND V/JAS Harpers Ferry inspection marks. Rack numbered 13 on the top of the wrist and with the initials JS carved in the reverse butt. Arsenal altered to percussion via the Belgian or "cone in barrel" system. The Harpers Ferry alphanumeric alteration mating code A2 is stamped in the wood between the tang and the counterpane. Musket retains both sling swivels and a includes a reproduction ramrod.