"Crown Over 30" Mark on Toe of S&W .455 "2nd Model"
This little marking has me stumped after a little research, so here it is for your identification.
https://www.milsurps.com/images/impo...stuff014-2.jpg
https://www.milsurps.com/images/impo...tuff0141-1.jpg
https://www.milsurps.com/images/impo...stuff012-2.jpg
Another view
It isn't on any Smiths handy that have other British markings, and the revolver has no other "non-S&W" marks.
The books checked so far have no similar markings from any country included within, and a Google search revealed a couple of other Smiths in about the same S/N range (roughly 1000 from the end of the run of .455s) with the same marking. No other useful info from that search as to it's origins.:thdown:
Your insights would be appreciated, but poorly compensated.:D