I just received another old Belgian 12 GA. SxS Guild Gun. It's a pretty little thing. No nitro proofs, but BP proofs. Cannot seem to date it. It has a Double Headed Eagle and Crown Crest on both barrels and "Acier Cookerill" stamped beneath the crests. Nicle plated receiver and trigger guard. Found a "DD" marked on the underside of one barrel. Bores are beautiful and gun is in excellent condition. Could stand to be put on face. Any ideas of the history or maker?