Scottishmoney - yes, I believe there are some that are a bit too low priced. In particular, if we are talking about 1960s and later (there are many scarce ones in the 50s), a relatively hard coin is the silver 100 yen coin, the NON-olympics coins minted in Showa 39. It's pretty funny how the value of them is about the same and the mintage is actually the lowest in that series with just 10 million, with some other years averaging about 50 million. Mint set of 1969 (I think) was the first mint set minted, and commands some 700USD+ in recent years

Sales price at that time of release - just 1 American dollar. Note: keyword - US dollars, not Japanese yen. That's the largest profit ever
Now comparing that to the South Korean coins, there are two mint sets that are extremely rare and one of them is a common circulated proof set minted only in 1982 which commands some whooping 2000 USD......
Banivechi - I'm sure there must be some kind of evil conspiracy behind me

Didn't you notice the number of Romanian coins in my collection is starting to slowly grow?

I'm a bit behind cataloging all of the coins I have so bear with me...

Hopefully that will boost the prices of Romanian coins but that will be bad for me!