Name | Issues/Designs | |||
calcite | — | — | d - calcite 1989 | |
Faden quartz | — | — | d - Faden quartz 1994 | |
Ferrous dolomite | — | — | d - Ferrous dolomite 1994 | |
pyrite | — | — | d - pyrite ball 1989 | |
Sea Urchin fossil | — | — | d - Sea Urchin fossil 2004 | |
Strontianite | — | — | d - Strontianite 1994 |