Hasselblad 70/500 film magazine

One of the first Hasselblad 70/500 film magazine made with serial number 1004.
It is the 4th one made with the notice "Made in Switzerland" engraved below the serial number. The original country was no longer mentioned after that.
I did not know these magazines were made in Switzerland. I would welcome any piece of information about their creator.

The 70/500 magazine could contain 500 photographs on a 30-meter long film roll, it was the rarest and the most expensive Hasselblad accessory back then.