belgian proof marks

[Drew Hause]

Here is another resource. The controller's marks cannot be used to date the gun, but it should have a letter annale
http://www.shotgunworld.com/bbs/view...p?f=5&t=295608

If you'd post a close up of all marks on the barrel flats, and just forward of the flats, I'll try to help.

[jsd245]

Thanks. Unfortunately I don't have pictures. I didn't see a letter annales anywhere, that chart starts in 1921, so could it be before that? So the controllers Mark is not definitive- how about the other two marks I mentioned? Do they definitively date it prior to 1924?

[Drew Hause]

Date of Manufacture
NON POUR BALLE - choked unrifled bores used 1878 - 1897
1898 - 1910 – Bore in mm (22 cm from breech) and muzzle (choke constriction) appear next to each other after ‘choke’
1910 – 1924 – Bore in mm is over muzzle dimension

Prior to 1924 the gauge would be indicated within a diamond.
Post-1924 - A 12-70 in an Omega lying is the gauge and chamber length in mm., and would indicate the gun is chambered for 12ga 70mm or 2 3/4” length shells.