y74 1 Yen 1.0 gr. Aluminium 20.0 mm Plain
y72a 5 Yen 3.75 gr. Brass 22.0 mm Plain with hole
y73a 10 Yen 4.5 gr. Bronze 23.5 mm Plain
y81 50 Yen 4.0 gr. Copper-nickel 21.0 mm Reeded with hole
y82 100 Yen 4.8 gr. Copper-nickel 22.6 mm Reeded
y87 500 Yen 7.2 gr. Copper-nickel 26.5 mm Reeded
