The wood lines look very 'crisp' on that stock. The rifle could not have been fired much. The percussion cap system will, with use, cause damage and discoloration to the wood around the bolster/nipple area, unless further protected.

Caution - The trigger on a CW Springfield should be smooth.

It appears in your photo, the trigger is 'checkered'. That could be a trigger-guard unit from a model 1873 Springfield. I believe the trigger-guard units are identical, except the 1873 guard was 'browned' (blued) and it has a 'checkered' trigger.

(Re-visit my previous Post, which has been edited, regarding blemish on Breech-Plug).

FWIW - I suspect a 'Shooter' has once owned this model 1863 Springfield. It was un-breeched for barrel inspection/cleaning. A model 1873 trigger (or whole trigger-guard unit) was put on it.

These are minor faults and correctible. They indicate the rifle has been 'tinkered with'.