20 GROSZY 2011 - I 2 a - mint error

mint - Warszawa
the number of copies minted in the year - 15 000 000
metal - Cu/Ni (MN25)
axis - ╦ ╦
diameter - 18,5mm (0,73")
weight - 3,15g (0,111 oz.)
catalogue numbers - CHAŁ:4.7.19.a;
edge - reeded
obverse designer - Stanislawa Watrobska-Frindt
reverse designer - Ewa Tyc-Karpinska

notes - on the obverse, some letters in legend are wider

20 GROSZY 2011 - I 2 a - mint error - obverse

20 GROSZY 2011 - I 2 a - mint error - reverse

488

10 GROSZY 2012 - I 1 a - mint error

mint - Warszawa
the number of copies minted in the year - 136 000 000
metal - Cu/Ni (MN25)
axis - ╦ ╦
diameter - 16,5mm (0,65")
weight - 2,50g (0,088 oz.)
catalogue numbers - CHAŁ:4.6.19.a;
edge - (reeded/plain)x4
obverse designer - Stanislawa Watrobska-Frindt
reverse designer - Ewa Tyc-Karpinska

notes - on the obverse, the eagle has swollen paws

10 GROSZY 2012 - I 1 a - error - obverse 

10 GROSZY 2012 - I 1 a - error - reverse 

482