Hi all,
I´m glad my info was helpful for you. As far as I know there weren´t any G-10s assembled at Vilseck factory. And there wasn´t any official repair workshop according to my sources.
Concerning the lack of any Stammkennzeichen I´ve got some evidence that those signs were applied after being successfully test-flown at Amberg-Schafhof. Some photos exist from belly-landed test a/c at Schafhof with the common-known hand-painted final digits of the Werk-Nr. Due to poor quality of those 109s this happened rather often. The skill of the workers and subcontractors was rather low let alone the attepts of sabotage by the KZ workers. So I do think work was restricted simply to the montage of prefabricated wings and fuselages - afaik additional production was carried out at Floss-Plankenhammer some 5 km distant from KZ Flossenbürg - so that repair of damaged planes was beyond of the skills of those workers.
After March 1944 Messerschmitt Regensburg spread its production all over the so-called Upper Palatinate ("Oberpfalz) in Northern Bavaria to escape the then extensive bombing. The patchwork look of many late-war 109s can be explained by this production methods.
The Stammkennzeichen was applied just before handing over the 109s to the Luftwaffe, there´s a photo of a snow-covered K-4 W.Nr. 332 707 at Schafhof ready for delivery. At Falcon´s an "N" of the last letter is visible. Schafhof airfield together with numerous planes was totally destroyed on April 18, 1945.
I´ve found a webpage about the "Einflug-Flugplatz Amberg-Schafhof" with more additional info about Stammkennzeichen, Werknummern and flight accidents - unfortunately only in German. For those who can read it:
http://www.flugplatz-amberg-schafhof...ugbetrieb.html
If you need some translation feel free to ask
Concerning the fences I´m quite sure they still exist. They used good quality and aluminum does not rust ;-)
Thanks
Roland