Well I just looked at the gun and had to pass on it. It is in beautiful shape with a presentation case that has all the felt missing. Locks up super tight and has no bluing wear at all. I measured the throats and they were .458 to .460. It would be a great collector's piece but probably not much for a accurate shooter, so at $800 I let it go.
He also had another gun which I did get. A model 57 no dash in 6" also in a presentation box (with all the felt) with paperwork. This gun is pristine and I would rate it at about 90-95% because of no cardboard box or end label. It had a cash register slip with it dated 1-30-78 and the total price was $236!