r/muzzleloaders

Got gifted this by a friend, I'm assuming it's a cap and ball style? What would I need to do to clean it and get it running properly?

I’ve been trying to find out what musket this is but I have absolutely no clue. The trigger is this weird long half circle thing, no marks on the lock, and what I assume is a hand made aluminum end cap on the stock. The butt stock has maybe a date? Anyone have any clue what this thing is?

Picked this up for dirt cheap, im no stranger to muzzleloaders but im certain I got a wall hanger, I'd like to at least get an idea of what this is/was. Seller said the guy he bought it from said it was a .50 cal, but he's not a shooter and just had it hung up. Its definitely not a .50 cal, looks like it was rebored poorly (didn't catch it when inspecting it)

Questions: what is/was this, any possible value to be had?