
Hallmarks

20 Kopeks 1961, No Step

20 Kopeks 1961, on a 15 Kopeks planchet

20 Kopeks 1948, Novodel

20 Kopecks 1979, Mule

20 Kopecks 1981, Mule
![20 Haleru 1996 [Czech Republic]](/imgproxy/unsafe/rs:fit:247:247/sh:0.8/plain/local:///thumb/2024/18929_20-gellerov-1996-chehiya-avers-158838.webp)
20 Haleru 1996 [Czech Republic]
![20 Haleru 2001 [Czech Republic]](/imgproxy/unsafe/rs:fit:247:247/sh:0.8/plain/local:///thumb/2024/19953_20-gellerov-2001-chehiya-avers-158829.webp)
20 Haleru 2001 [Czech Republic]
![20 Haleru 1998 [Czech Republic]](/imgproxy/unsafe/rs:fit:247:247/sh:0.8/plain/local:///thumb/2024/20094_20-gellerov-1998-chehiya-avers-158832.webp)
20 Haleru 1998 [Czech Republic]
![20 Heller 1943 [Czechia / Protectorate of Bohemia and Moravia]](/imgproxy/unsafe/rs:fit:247:247/sh:0.8/plain/local:///thumb/2024/20467_20gellerov-1943-chehiya-avers-160245.webp)
20 Heller 1943 [Czechia / Protectorate …
![20 Haleru 1994, b', Mint Mark: "b'" (b with crown) - Jablonec nad Nisou, Czechia [Czechia]](/imgproxy/unsafe/rs:fit:247:247/sh:0.8/plain/local:///thumb/2024/20782_20-gellerov-1994-b-znak-monetnogo-dvora-b-b-s-koronoy-yab_wOeX0Yw.webp)
20 Haleru 1994, b', Mint Mark: "b'" (b …