Saw this and fell in love with it. Just mint pre 36 2" , it's my second one and I'm trying to date it, any help is appreciated. The serial# is 122176 and I don't think it was ever shot !
The two closest ones I list that bracket yours within a few thousand numbers shipped in September '57 and May '58. The company didn't ship them in serial number order so take that with a big grain of salt.