I bounced around the Balkans and the region relatively frequently a few years ago. The amount of
fake stuff in their flea markets was phenomenal, ranging from
Roman 'antiquities' to a lot of Nazi regalia (which seemed particularly prominent in
Bulgaria). Most of it was sufficiently awful to not pose much of a threat. I didn't notice a plethora of
fake coins, but wasn't paying that much attention to them at the time. I'd guess, though, that we're going to see a significant uptick in
fake Romans over the next few years. There has been somewhat of a cottage industry in the
area of metal detectorists hunting for coins and the like. My guess is that the easy to find stuff might be past its maximum cost-benefit ratio. As searches become tougher, it might become more cost effective for some of the people who spent a lot of time searching for and finding coins and artefacts simply to spend their time faking them instead.