In Edwest,s Photos + 7-19 is the following picture
http://cgi.ebay.com.au/ws/eBayISAPI....MEWA%3AIT&rd=1
In my copy of Axis Aircraft of World War II (David Mondey) on page 171 is an illustration of BF 109G-2/Trop of II/JG 51 at Casa Zeppera, Sardinia, summer 1943.
Not being an expert but these seem to be the same plane. Photo was taken 1944 and the location is just accross the road from Sardinia.
Any comments ?.