Watch List notes:

♦Japan, Hammered Gold and Silver Koban (1 Ryo), no date (1860-1867), Manen era (March 1860 - March 1861, but without era mark) during the reign of emperor Komei (1847-1866), elongated oval shape 36mm by 20.5mm, weight 3.34g, .670 gold and .330 silver (tested and verified), obv. two rectangular stamps with the value and signature of the Mint Official and two fan-shaped Kiri crests, rev. three authorisation stamps, all well struck, flan not bent or crimped and with good edge and surfaces, EF SCARCE
(Estimate: 400 - 500 GBP)