Watch List notes:

♦Japan, Hammered Gold and Silver Koban (1 Ryo), undated (1837-1858), Tempo era, elongated oval shaped 60mm by 31mm, weight 11.18g, .698 gold and .302 silver (tested and verified), obv. two rectangular stamps with value and signature of the Mint Official, and two fan-shaped Kiri crests, rev. three authorisation stamps, numerous scratches on rev. and light wear along obv. edges, otherwise very well struck, flan not bent or crimped, EF RARE
(Estimate: 800 - 1000 GBP)