Hi thanks! I am new to ancient coins (since I bought these), I am learn quite a bit about the lingo 
. But what do you mean by "long before the fall of the Iron Curtain" and how would that effect rarity?
Thanks!
Coins which are typically found in eastern Europe became much more common after 1990. It wasn't possible to export coins to the
west when the Iron Curtain stopped trade. Once the Iron Curtain fell, there was a very large increase in exports of coins from eastern Europe. This was also helped by metal detectors becoming much more common. As a result,
types which were previously considered very
rare in the
west world have become relatively common today. This especially affected late
Roman bronzes and
Roman eastern
provincial bronzes, because such coins
had hardly been collected by anyone before the fall of the Iron Curtain (because they were simply not available), and were typically missing from
museum collections, which are usually used as indicators of
rarity.
