I got and Enfield Pattern 1856 a couple of days ago. The bore is good. The stock has had some surface rot and has been skimmed with epoxy by the look of it. It still looks alright and it can be shot.
I'll look out for a replacement stock for it or buy a new one.

These are the details. In the picture it is the second one down with the bayonet lug.

Percussion military musket - Enfield Pattern 1856 Sergeants Fusil for Native Infantry.
Dimensions
Overall Length 49”
Barrel Length 33”
Firearms/Artillery
Serial Number None visible
Calibre
.577 in
Notes
Described in the 1891 Enfield transfer list as: Fusil sergeants, 1857, 3 grooves calibre 577 in. with bayonet.
Also recorded in the inventory: Only the original order for 10,000 of these Fusils was completed. It appears that all were delivered in to Store by March of 1859, the order dating from July 27th 1857. The mutiny precluded further rifled arms being made for the Indian Service, although others had already been produced concurrently with this Fusil.

https://i.postimg.cc/7LGfy6mZ/1856-pattern-577.jpg