the number of copies minted in the year - 270 000 000
metal - manganese brass (MM59), (CuZn40Mn)
axis - ╦ ╦
diameter - 15,5mm (0,61")
weight - 1,65g (0,058 oz.)
catalogue number - CHAŁ:4.3.20.a;
edge - reeded
obverse designer - Stanislawa Watrobska-Frindt
reverse designer - Ewa Tyc-Karpinska
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| 1 GROSZ 2011 - I 1 a - obverse |
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| 1 GROSZ 2011 - I 1 a - reverse |
401
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