foreign coins

number Y# 73a Country Japan Denomination 10 yen Year Yr. 53 (1978) - ?????? Hirohito period (Showa) (1950 - 1989) Type of coinage Regular issue Ruler Hirohito Material Bronze Edge Smooth Shape Circle ABC/rev ratio Medal (0°) Weight (g) 4.5 Diameter (mm) 23.5 Thickness (mm) 1.5 Legend: Obverse ? ? /??? Reverse 10. number KM# 27 Country South Korea Denomination 500 won Year 1984 Period Republic of Korea (1982 - 2021) Type of mint Regular issue Material Copper-Nickel edge Ribbed Form Circle ABC/roar ratio Coin (180°) Weight (g) 7.7 Diameter (mm) 26.5 Thickness (mm) 2 Legend: Obverse ??? Reverse???? / 500. Fischer catalog number - OB 037, obverse - emblem, reverse - number 1, edge - notched, weight - 2.12 g, diameter - 25 mm, metal - aluminum, type - circulating, condition - seen in the photo.