500,

I have found out very little about it, but here is what I have.

They're asking $7,500.
I believe it is a sidelock. There are plates which can be removed on the sides of the rifle to access the internals.
Ejectors
The gun seems to be in pristine condition throughout. I cannot tell if it has ever been fired. I saw no rust, scrapes, or dings in the metal or wood.
To the untrained eye the wood to metal fit seems to be tight. There are no gaps or open seams which I have noticed.
The rifle has a single set of open sights - no scope.

Aaron