GSR insurance valuation......a Dutch/German question

[de1amo]

İ live in Turkey but have got a genuine 1973 GSR. İ don't know what amount it is worth for an insurance valuation because it is unique here... GSR's are mainly in the hands of Dutch or German owners and they don't like to talk about prices because they have no intention of ever selling .....İ just need to have an idea of the premium on the price of a standard 1303s?.....

[Tjaap]

i've never heard of a GSR?

[sixpack]

http://ranwhenparked.net/2013/02/10/sunday-classic-volkswagen-1303-s-gsr/

[DJW]

a few months ago an original gsr has been sold on mobile.de. Asking price 19.000 euros.