- | 15c | multi | Prune | — | — |
- | 15c | multi | posthorn & UPU emblem | — | — |
- | 15c | multi | Conus granulatus | — | — |
- | 15c | multi | cattle egret Bubulcus ibis | — | — |
- | 15c | multi | MTS Jupiter | — | — |
- | 15c | multi | T-9 Class 1899 | — | — | |
- | 15c | multi | T-9 Class 1899 | — | — | |
- | 15c | multi | Class C12, Japan (1985) | — | — | |
- | 15c | multi | Class C12, Japan (1985) | — | — |
- | 15c | multi | hooded warbler | — | — | |
- | 15c | multi | Carolina wren | — | — |
- | 15c | multi | Zerynthia rumina | — | — |
- | 15c | multi | Mercedes-Benz 45 litre 1914 | — | — | |
- | 15c | multi | Mercedes-Benz 45 litre 1914 | — | — |
- | 15c | multi | Class T15 Germany 1897 | — | — | |
- | 15c | multi | Class T15 Germany 1897 | — | — |
- | 15c | multi | Queen Victoria in 1841 | — | — |
- | 15c | multi | Britten Norman Islander making Night Approach | — | — |
- | 15c | multi | Gokstad ship of Leif Eriksson | — | — |
- | 15c | multi | Pam Shriver | — | — |
- | 15c | multi | Horace Horsecollar & Clarabelle Cow in Darracq “Genevieve” | — | — |
- | 15c | multi | Allied tank at Anzio 1944 | — | — |
- | 15c | multi | — | — |
- | 15c | multi | — | — |
- | 15c | multi | — | — |
- | 15c | multi | Paulogramma pyracmon | — | — |
- | 15c | multi | Hydropus paraensis | — | — |
- | 15c | multi | — | — |