I present you a coin of 10 kč from 1928, Commemorative issue
10th Anniversary of Independence - Tomáš Masaryk
1928
Value 10 Korun (10 CSK)
Metal Silver (.700)
Weight 10 g
Diameter 30 mm
Thickness 1.8 mm
Shape Round
Orientation Medal alignment ↑↑
Demonetized 31-03-1940
References KM# 12, Schön# 17
https://en.numista.com/catalogue/pieces12621.html

Here is a short production document at the Kremnica mint from 1928. The Kremnick Mint has produced coins for an uninterrupted period of 700 years.
In the document-preparation of coin design, the copper silver thinning is 0.700, rolling, pickling in sulfuric acid, interesting is the output test sound of the coin. The document is for lovers of the history of coin production.
https://www.youtube.com/watch?v=zhRJ_FroxPg
Ahoj Ivan

