Maynard Model 1863, .50 cal. percussion breech loading carbine.  Serial #23617, mfg. 1865.  Second Model. Excellent condition.   20” barrel has clean, shiny bore with strong rifling, correct sights, 80% old brown finish.  Receiver has excellent patina finish with crisp address markings, excellent screws, saddle ring present.  Butt stock is excellent with few light marks and one ding on right side.  Correct butt pale.  Under-lever action  works perfectly, action is tight.  A superb example of this famous Civil War carbine!  Antique, can ship your door.