I know it's hard to pinpoint, but looking for ballpark figures for a 4" 29-2. S serial # puts it at late '64-early '65 date according to Standard Catalog. Excellent condition, it's been fired but not much, just a couple of tiny nicks on trigger guard. Original case with goodies. Not that it adds any value, but belonged to William Sharp, who was the gunsmith at Chicago's Klein's Sporting Goods in the 60's. You can google what he did.