Maybe I can add a little more here. The OP's plain, but solid functioning pistol was likely made at one of the many gun making centers in the Balkans. Probably sometime during the first half of the 19th Century. Often, certain styles of decoration can pinpoint a closer location. Other times not. The decorated on mine tends to favor a Ottoman/Turk origin. Or made for a customer from that area. But it could have been assembled elsewhere. Decoration on these guns tends to be done in a generic fashion so as not to offend any religious sensibilities, thereby offering a potential sale to a wider variety of perspective customers. Many of the guns from these regions have no markings at all. This is so a particular gun couldn't be traced back to a specific gun shop, as the guns were sold to both friend and foe alike.
Spurious type marks would serve the same purpose. For the most part, you can't get too specific in dating these guns. The styles of guns - and flintlocks in general - were in regular use up to about 1880 with little if any change. This is also the likely reason so many original examples still exist today. What's especially curious is that for these guns to have be made and used over such a long period that so little historical documentation is left to study. There were actually entire towns and villages where most of the population was devoted to arms making, usually under contract with the Ottoman Empire. Of course, illiteracy probably had a lot to do with the lack of records.
Rick