KOREA:LOT of 11 square hole sang p 'yong tong bo type cash coins of the 5 mun denomination, much better than average circulated condition, retail value $150, lot of 11 coins. There are estimated to be more than 5,000 varieties of this coin type and the sang pyong tong bo coins were used for more than 250 years (1633-1891 AD), which was longer than any other coin in Korean history.
Estimate: 75-100 USD