The one for-end in the picture, for it to be from a 3E it would have the ebony tip. The one set of barrels is from a 00 gr. and it looks like someone stamped the serial number to match the original set. The Nitro Steel barrels which came with the gun date it to 1902.
The design checkering on the stock looks right except for the Monte Carlo, which you could order, but not sure if that early.
As for price, the only way is to have it appraised by a good double gun person, one who knows L.C. Smiths. To try and tell you what it is worth is like trying to tell you what your car is worth, condition is everything, original is best, reconditioned in my opinion is 70% original condition.
