Mike

Bet'cha it's not a 1st change, but just a 1902.

Reason is that, for a 4 " barrel, the patent date roll markings are still on the
top of the barrel. If it were a 1st change, they would be on the side of the
barrel.

If we get some pictures, I bet there is no shoulder on the barrel, where it meets
the frame. If there is a shoulder, and with top roll markings, then we have an
example of the very earliest of the 1st change models. In that case, it would be
very interesting to see a picture of the roll markings. I've never seen, nor heard,
of one where the roll markings might have gone up the shoulder.

Regards, Mike Priwer