RARiddell
Let me suggest another idea! My gun was re-proofed in London in 1980. I know this because a date code LP over 80 is stamped near the breech on the lower barrel in my picture(you probably can't see it in my picture but it's there). My proof chart tells me your gun was re-proofed between 1954 and 1985. Maybe the 80 is a date code for re-proof. Date codes at the Birmingham proof house were on and off and always very confusing. The 25 may be the identity number for the employee who did the re-proof. Just a thought!
Bob
