Remington 1864 rolling block carbine cal

Remington 1864 rolling block carbine cal  Flayderman P 179, item 5E 083.  Production of 5095 , 5000 military and an overrun of 95. 
This is one of these 95 overruns.  
Fitted with a factory installed 20 inch barrel,  excellent markings on the tang.  stock is outstanding, excect for a pierced hole to attach it to the saddle. 
fitted witha a bar and swivelring. 95 % blue on barrel, casehardening is muted and turned somewhat dark,  overall excellent plus and 100 % correct, ultra rare haeving the 20 inch short barrel.