Czech Coin Collection

I got these coins from my parents who have been to the Czech Republic on a trip.



FrontReverseSideNameSpecifications# of extras for trading
20 Hellers - 1996 Diameter: 17 mm
Weight: 0.74 gr
Thickness:1.7 mm
Edge: Milled with 90 grooves
Year of issue:1993
1
50 Hellers - 1994 Diameter: 19 mm
Weight: 0.9 gr
Thickness:1.7 mm
Edge: Alternately plain and milled
Year of issue:1993
1 Koruna - 1993 Diameter: 20 mm
Weight: 3.6 gr
Thickness:1.85 mm
Edge: Milled with 80 grooves
Year of issue:1993
1
Year 2000
2 Korunas - 1975
2 Korunas - 2001 Diameter: 21.5 mm
Weight: 3.7 gr
Thickness:1.85 mm
Edge: Rounded and plain
Year of issue:1993
1
Year 1993
5 Korunas - 1994 Diameter: 23 mm
Weight: 4.8 gr
Thickness:1.8 mm
Edge: Plain
Year of issue:1993