Hazat's were in several toolkits, invluding the various VW cars, Porche's etc etc.
The 13/8 wrench was the only DOE size in the 70's era Bug toolkit, but factory (aftermarket) rolls include 7x8,10x12, and a 13 and 14 combination wrench.....(so, no, you can not take your bug apart with the toolkit in the trunk/hood-lol)
The DIN marked could be a BMW toolkit wrench, or (likely) just a plain vanilla mechanics wrench....
Porche used 8/9,10/14,11/12,17/19, but *not* marked Hazat in that style....
(Benz spent the extra bux and had their toolkit wrenches marked with their name..)
....