Sounds much like the one I have. Don't suppose you looked at the proof marks did you? Mine has early Birmingham marks, during the "Not for ball" era but doesn't have that mark. Both bbls are currently cylinder bore, so may have been built that way. Bores are marked "14" but now measure about 13ga & it has a 12ga chamber (No chamber size mark). Mine has sentimental value, but without that I would think you did well to pass at mentioned price.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra