Hello to all. I've been coming here for a bit and thought it time to join since I've seen some pretty good information and very friendly and helpful people on the site. I've ordered a copy of the Smith book, but alas, patience is not one of my strongest points. Having said that I just picked up a model 64-3 stainless with a 4" barrel in 38 special and am looking for it's birth year. The serial # is 1D870XX. I was looking for a manufacture year on a 686 and found a code for manufacture year I thought on this site. I may be incorrect since starting about 4 years ago hearing, sight, mind started losing their edge. Lol.