I thought I might ask here, as this forum has some very knowledgable people, who are quite generous with their knowledge, particularly when it comes to information about US coins or coins made by the US Mint. So here's my question: The US Mint in Philadelphia manufactured about 50 million South Korean 100 Hwan coins, dated 1959. It is the only year this coin was produced, and it was only produced by the US Mint. On the obverse of this coin are the initials "EvH". This is an odd inclusion on a South Korean coin, as they are the ONLY initials on any South Korean coin minted to date. South Korean coins don't even have a Mint Mark. Also, "EvH" would probably(?) not be applicable to the name of a Korean designer or engraver, in my opinion. In a Korean-language book written in 2006 by a former Korean Mint employee, it is explained that the design and engraving work for the 100 Hwan coin was done in Korea. If true, it makes the initials on this coin even more mysterious. No other Korean-language or English-language information on this topic is readily available on the internet. If you do look this up, you will notice a lot of references to Eddie Van Halen. I suspect it wasn't THAT "EvH", though(!) So, are these the initials of a US Mint employee, like an engraver or designer? The time period would be 1958-1959. I can only see the Mint's Chief Engravers' names in searches. Any learned suggestions or information would be appreciated! Thanks in advance!