One of the often asked questions here is about serial numbers and years of manufacture.
This file provides you serial numbers and corresponding years of most of the manufacturers including the British best.
http://bluebookofgunvalues.com/Info/PDF ... ialize.pdf
I thought most of you like to have a reference for various proof-marks. The file is attached to the post for download or you can download from the link.Plenty other interesting stuff on this website.
http://www.cornellpubs.com/Catalog/proof-marks-intl.pdf
Best-
Vikram
