You can find it in China, Bulgaria, Israel and Libya. I taught it at a vocational school in 1985. I have doubts about the huge hoards of Roman imperial coins that are available. These coins sell well without a second glance. In December of 1998, while on a second honeymoon, I attended a couple of shows in warm weather and cold and I visited a few dealers in several states.
Obvious fakes are obvious.
It is the not-obvious ones that scare me. What scares me more is when dealers get coy. Like the smugglers they buy from, some dealers do not like to reveal their sources. However, only coins from important old collections have these histories. A new find, however real and authentic, is indistinguishable from a newly-minted coin.