Name | Issues/Designs | |||
abacus | — | — | d - Calculator & abacus 2002 | |
Ball pen | — | — | d - Ball pen 2012 | |
bouquet | — | — | d - bouquet 1981 | |
butterfly kite | — | — | d - butterfly kite 1998 | |
clothespin A | — | — | d - clothespin A 2005 | |
compass | — | — | d - compass 2005 | |
electronics | — | — | d - electronics 1979 | |
gunpowder | — | — | d - gunpowder 2005 | |
lantern | — | — | d - rooster lantern 1984 dt - Chinese lanterns (1984) 1984, etc (4) | |
letter | — | — | d - pigeons carrying letters 1974 | |
letter scales | — | — | d - letter scales 1924, etc (36) | |
pipelines | — | — | d - pipelines 2001 | |
scales | — | — | d - scales 2000 |