Set Composition: Japanese Hirohito 1 Sen, Circulation Strikes (1927-1945)
| Issue | Weight | RB Bonus | RD Bonus | |
|---|---|---|---|---|
| (1927) S2 | 2.00 | 1 | 2 | |
| (1929) S4 | 3.00 | 1 | 2 | |
| (1930) S5 | 3.00 | 1 | 2 | |
| (1931) S6 | 1.00 | 1 | 2 | |
| (1932) S7 | 1.00 | 1 | 2 | |
| (1933) S8 | 1.00 | 1 | 2 | |
| (1934) S9 | 1.00 | 1 | 2 | |
| (1935) S10 | 1.00 | 1 | 2 | |
| (1936) S11 | 1.00 | 1 | 2 | |
| (1937) S12 | 1.00 | 1 | 2 | |
| (1938) S13 Paulownia | 1.00 | 1 | 2 | |
| (1938) S13 Bird Obverse | 1.00 | |||
| (1938) S13 Small | 1.00 | |||
| (1939) S14 | 1.00 | |||
| (1940) S15 | 1.00 | |||
| (1941) T16 | 1.00 | |||
| (1942) T17 | 1.00 | |||
| (1943) T18 | 1.00 | |||
| (1944) S19 | 1.00 | |||
| (1945) S20 | 1.00 | |||
| (1945) Clay | 2.00 |
Divisor: 27