Hi. I just purchased a nice Model 59 (I'll post pics when I take delivery on it) with a nickel frame and blue slide. Could this be a factory finish? Anyway I digress... What I really want to know is if a slide for a model 39 will work on the 59 frame. I could possibly pick up a nickel slide that came off a model 39 and I thought it would be fun to see my gun in all nickel. Thanks for your help. Also the serial is A174***, anyone know the date of mfg.? Thanks.