I've also posted this on SS/BBS. Thanks in advance for your expertise.
I have acquired a 16 gauge (of course) Bayard hammergun that I am trying to date. Serial #5582. It has the PV nitro proof mark and the ELG* in an oval final proof. There seems to be an inspectors mark of "r" over an "*." 16c in a diamond. Fluid steel, mono-block 29" barrels with the Bayard Cavalryman on both with "Anciens Establissments Pieper Herstal. Back action locks with "Machine Made Safety Action Bayard Gun" on both sides of the frame.
When I got the gun it was a typical continental shotgun. I've had the swivels removed and plugged, the cheekpiece removed, it's been straight gripped, refinished, recheckered, and a Galazan "Silvers" pad installed on the curve so the horn butt plate could be reinstalled. The barrels had previously been reblued and it retains about 80% original case colors. It weighs 6 lbs. 3 oz. and balances a hair in front of the hinge pin. Choked .007R and .021L, I intend it to be a Prairie Chicken and Rooster gun as well as a fun target gun.
I wish I had pics of the proof marks, but I don't have a good enough camera. These were taken by a friend.
Thanks for your help, sv