I wanted to share with you all a somewhat early 44 magnum I just bought from OH recently. It just came in this past Saturday. Its a 5 screw, 6.5in 44 magnum (pre 29), S153XXX. I don't have a letter yet. The gun is in beautiful shape. There is a small nick in the right grip panel, but I will live with that. The metal condition is fabulous, which I would say is 98%, very slight edge wear, with no holster wear that I can see. I'm still amazed I got this 44 because this is my second 5 screw 44 mag this year. I'm hoping this gun is also a first year example, but many S153XXX range guns shipped in 1957, so I will have to wait and see. The earliest ship date for that SN range that I found was 7-2-56, so there is a chance that it will end up being first year production. Crossing my fingers...Here she is:
Here is the factory letter I got a few months after getting the revolver.