Originally Posted by StoneChimney
The serial number should be on the underside of the barrel. 1957 should have no letter, and range between ~12000 to ~28000. If it was 1964, the serial number should start with '4T.'
That is Grade III engraving, and it appears to be unsigned which is not unusual. In the $2500-$2800 range.
Thank you for your reply. I have seem some at auction online for between $4,000 and $6,900. Of course that's a good day with the right buyers and an engravers mark. I would think having the original barrel never fired would command better than $2800 What do you think?