Jeton Guyancourt L.H.P.G. Karcher token in France self-service Kärcher facilitie

Kärcher token, specifically identified as a "Jeton Guyancourt L.H.P.G. Karcher".
Here's more information about this token:
Purpose: These tokens, also known as "Wertmarke," were typically used in self-service Kärcher facilities, primarily for car washes or other cleaning equipment, to activate the machines.
Issuer/Context: The token is associated with the Kärcher brand, a well-known manufacturer of cleaning equipment, and features "L.H.P.G." and "78 GUYANCOURT," indicating a specific location or operator in Guyancourt, France.
Physical Characteristics: This particular token is made of nickel and typically measures 22mm in diameter and weighs around 5.65g, though variations in metal and size exist for other Kärcher tokens.
Classification: It falls under the category of "exonumia," which includes tokens, medals, and other coin-like objects not used as official currency, often collected within numismatics