Trapdoor Rifles

Thank you Dick ,
It is interesting of the period of transition.
I see so many rifles shortened to carbine . This is a full rifle with R rear sight . The stock has been cut down but not the action and barrel .
Would it be wise to return it back to original stock?

Not as much concerned of value . But interested in how rare my model 1873, 1877 rifle ser. No 74261 . Has 32.5 inch barrel and total length of 52 inches . Any info would be appreciated.