It's a beauty. Have to wonder, though, why every Diamondback I see is in mint or near mint condition. I don't think I've ever seen one, in fact, with the least bit of wear on it. I guess they're too pretty to use as real tools. Congratulations.
PS, back in the 1980s I met a guy with two Diomondback. One was in .22 and the other was in .38. He got them from his bank just for opening up an account there. I think that had happened, though, quite a few years before I met him. Can you imagine banks doing that today?