https://www.ebay.com/itm/KOREA-1-Ch...987430?hash=item48f4387aa6:g:ETEAAOSwlIxfz6yL I'm sure this is totally legit. Right?
I don't know these coins, but the first think I do is to investigate any Neutral or Negative feedbacks if the Seller's rating is below 99.8%. In this case, the seller's rating is 99.4% and has negative feedback relating to coins...bought from this seller, sent it a TPG, and returned as "counterfeit". One feedback (with details removed) was for a "Korean Tae Dong Treasury Dept. 1 Chon" coin...whatever that is. Note: I don't know these coins, but I lived in South Korea for a time and today the word "Chon" means "1000". A Chon Won note is a 1000 Won note.
Yes: "천" (cheon or in old Romanization, ch'on) means "thousand." However: "전" (jeon or in old Romanization, chon!) means "one-one hundredth of a won. SO: There are one hundred jeon in one won. Still applies, and mintage costs per-coin are still rendered as (for example) "59 won, 18 jeon." This was the cost to mint a single 100-Won coin in 2010. Since then, the Korean Mint hasn't published minting costs.
Wow...감사합니다 When I was in Korea, a 100 won coin was the same size and weight as the U.S. Quarter, but cost about 12.5¢. Vending machine companies aren't fans of the 100 won coin.
It's really laundry machines where you can clean up: 100-Won coin = 1/6 of the U.S. Quarter, and laundry machine coin-accepting devices do not have slug-rejecting capability (unlike more contemporary vending machines). Widespread use of 100-Won coins in laundry machines in San Francisco was a huge problem in apartment buildings across the city in 2011.
You used to get 100 won coins in change in some video arcades in the 90s/early 2000s. I think they were the same size and weight as one of the standard token types (which oddly, was a little different from the US quarter).