Mark & fallschirmjaeger,

The gauge-length stamp and the nitro- proof are certainly post 1924. I have not identified the "V" under * or the italic "d". There is also what looks like a "U" under * just forward and inboard of the choke stamp on the right barrel.

For the $150 hammer price I think I did ok.
If all is well with the mechanics, I plan to clean it up and gift it to an upstart shooter.

John