Gerd,
I suggest that you start your search by logging onto the 356 Registry site. I believe that the grab handle was different for the coupe,than the Speedster and the roadster! I saw alot of bling-bling at the swap meet,so I would say that more than likely there was a grap handle for your forthcoming coupe there. The Hershey Swap Meet is the largest in the USA. Everything from throttle springs to complete cars for sale. Stoddard or NLA may have what you need,give them a try also. Ebay sometimes has hard to find items as well. Do your due diligence,and you will prevail! Eventually!!
Paul,
A great day for a drive. Ruby was pedal down and in the wind!!