David
Not saying you're wrong, only that I've seen nothing yet that would indicate to me the rib area is not correct. As to the gun being re-barreled from a 16 to 20-bore; nothing like that has yet been documented to my knowledge and would only serve to make the gun more collectible if that were the case. But give us the serial number and we'll determine the original bore size quick fast and in a hurry, as pre-1913 16 and 20-bore Smith guns have their own serial number blocks. I would also suggest that ROMAC contact Jim Stubbendieck thru the LC Smith Website and pay the fee for a check of the records; there's not much detail in those shipping records but what is there (gauge and barrel length for instance)is invaluable on a high-dollar gun.
