Wall lamp - Ceramic, Transparent glass

This unique wall lamp called Pottekijker is a rare find.
An item used to hang in the mansion above the Aga cooker, to look into the pots and pans.
Age - approximately 1920-1940, nationality: the Netherlands or Germany.
The material is cream-colored ceramic decorated with gold-colored trim.
Truly an eye catcher in your kitchen, hall, or bathroom.
Word delivered with the original specimen, prism surfaces, glass.
Is an extra transparent item possibly included?
The pot viewing devices can be mounted pointing either upwards or downwards.