Guy,
I appreciate your comments, but my gun was clearly not made by Gasser, but by a firm in Belgium. All Gasser-made pistols were so marked and additionally had a Crown over NI mark to indicate they were officially approved by King Nicki the first. Some guns were made in Belguim under contract and imported by Gasser. These too had the crown over NI mark. My pistol was probably made by one of the Belgian contractors, but for sale out side of Montenegro. Compare the gun you link to on the "little gun" site to this one on the same site:
http://www.littlegun.be/arme%20belge...egrin%20gb.htm
which they identify as a Belgian copy of the Gasser.
I am still looking for Austro-Hungarian crown over key marks, but I think they might also be Belgian (consistent with origin) or from elsewhere in the Balkans (intended market?). In any case, if the crossed keys are a Christian symbol, they certainly do not Jive with the Persian crest. Was Persia the intended market? 1913 was after the Persian contract with Mauser, these old style Gassers would not have been a step forward.
Marcus