Is your gun a two digit serial number ? If so, I probably owned it for a few years.
That is an interesting hammer gun. Very nice engraving. If I owned one like it, I'd have a hard time letting it get away. The split front of the trigger guard to accommodate the opening lever is interesting too.
And even when my state had a healthy population of native pheasants, I never saw any ringneck roosters with such long tail feathers. There ought to be a Boone & Crockett record book category for such trophy length feathers.