Fuchs 7 x 15 from 1970?

A friend of mine showed me his newest find, a NOS 7x15 Fuchs wheel and judging from the stamp on the inner side it is from 1970 or is it something like a number of the inspector from the quality department? Hmmm...

"Frosted" anodised like the '73 RS Fuchs

Fuchs markings

Width of the wheel not casted

Part number

By the way, it is for sale...