Hello!
I should have read more carefully what was written as indeed the Werke Nummer and loss was mentioned earlier by you, Ed. Somehow this went past my eyes - it was the location where the Ju 88 fin was found which first catched my attention in this thread.
I asked in a popular Estonian military history forum about Ju 88s shot down over Saaremaa. It is known only two Ju 88 crash places: one in sea near Tehumardi and another one at Leisi (area) in woods. Quite likely one of these is WNr 1237 (Tehumardi, in sea) and the other WNr 1240 (Leisi is "near" Kuressaare if some 20km - 12 miles - is near). More information is needed to verify which one is which.
One Estonian digital map with search engine can be found here:
http://atlas.ibs.ee/index.cgi.en
Regards,
Kari