Hey Rod,
Figured everything the Swiss had was from surplus but just didn't know for sure. I knew all the actual vehicles were produced during the war though.
Our group has a WWII Hetzer that came out of Switzerland about eighteen years ago. It was made by the Germans during the war but also has the dish wheels. Like a lot of vehicles, wheels are interchangeable from like types (not a Hetzer to a carrier
) so it could have been possible that the dish wheels were postwar production or originally intended for another vehicle such as a British or Canadian produced carrier.
Just haven't personally researched the subject enough to know and original photos are often without captions and assumed to be from a time they may not belong. Something along the lines of T16s at Normandy and the Marines using them in the Pacfic. Possible but not probable.
