A Smith's Patent Carbine, Serial No. 10561, circa 1861-1865

.50 caliber, part-round, part-octagonal barrel with fore and rear-sights, marked L.F.R. at breech, frame marked SMITH'S PATENT / JUNE 23RD 1857, ADDRESS / POULTNEY & TRIMBLE / BALTIMORE U.S.A, MANUFACTURED BY / AM'N M'CH'N WKS. / SPRINGFIELD MASS., serial number 10561 marked on underside of frame ahead of trigger-guard, inspectors' cartouches LFR and JH stamped on stock , color case-hardened barrel-breech, hammer and frame, oil-finished walnut stock and fore-end 

21-9/16 barrel 



Dr. Gilbert Smith, Buttermilk Falls, New York, inventor



Approximately 30,000 were produced.