Thanks for all the fast help everyone.
Dean, when we both got looking we thought the same about the line being the bottom of a 2 on the lug and it measures out to be a #2 frame - Thanks Bill - not a #1 as we first thought.
I have a bunch more pics to help out.
A picture of the overall gun will be added too.
Now for the bad news:
1) Some criminal partially reamed the chambers out to 12 ga, and they did it badly.
would need repair (not minor) before shooting.
2) The stock is not original to the gun. It is #124320 and also has an '0', an 'asterick star', and the small initials RB in the area where serial number is located inside stock.
3) A second screw hole was put into the trigger guard
4) Has external rust pitting for about six inches inclusive starting at muzzle tip.
Good news is all the other bits have the correct numbers and it is one impressive big gun assembled.
No idea where it sorts out value wise. Any thoughts on value range appreciated. Thanks again Gentlemen.
Cheers JG