Got this rare Manen Koban Coin from an old man running an antique shop in Osaka. Ended up turning it into a pendant and wear it everyday for good luck! : r/japan
Japan Koban : Buy and Sell World Coins : Auction Prices
Japanese Coins - MAN-EN KOBAN KIN - 万延小判金
1 Ryō "Man'en Koban" - Japan – Numista
5 gram Gold Japanese Koban Oval Coin .999 Fine (Restrike)
Japan Koban C 22a Prices & Values | NGC
COIN SET: JAPANESE GOLD COIN SET IN FRAME: #1 TEMPO 5 RYO KOBAN GOLD 1837 | Estate & Personal Property Personal Property | Online Auctions | Proxibid