CHF notes fit into the compartments as the cash drawer has 4 compartments for banknotes, which are adjustable and removable. The compartments are suitable for banknotes in different currencies such as CHF or Euro, as no specific currency restriction is specified. The cash drawer is robust and designed for use with different banknotes.
Do you still have a copy? Then have it copied by a locksmith. Otherwise get a replacement lock from a specialised dealer (hardware store). I don't know of anything better.
Greetings: Heinz