JG50 was in service only a very limited time: established in June 1943, dissolved October 1943 (when it became JG301)
RaFiGer - JG 50 - Jagdgeschwader 50, Info Seite Early Reichsverteidigung 1943 till 1944
based at Wiesbaden (
Jagdgeschwader 50)
Some pictures of the unit can be found here:
JG50 on www.me109.info
Looks as if SN°18874 may be one of the German fighter aircraft lost during the USAF raid on Stuttgart on 6th Sept 1943.
Bombing of Stuttgart in World War II - Wikipedia
Either during the initial run when the bombers came in from UK, or (in my personal opinion more likely) during the attack run of the 96th and 388th Bomb Group on Strasbourg (being the secondary target for that day)
-> Maybe the USAF Mission Reports of these BG's give an indication when this aircraft was shot down around Strasbourg?