:hi:

Face value: 2 zl

Metal: CuAl5Zn5Sn1 alloy
Finish: standard
Diameter: 27,00 mm
Weight: 8,15 g
Mintage: 1 700 000 pcs.

Face value: 20 zl

Metal: 925/1000 Ag
Finish: proof
Diameter: 38,61mm
Weight: 28,28 g
Mintage: 100 000 pcs.

:hi:

Issue date for 2zł is April 17, for 20zł April 21.
Issue price of silver coin is 96.-zł.

And the booklet.