Please see updated photo with number (above).
For me number is sure for: 44
?732
Also Airfield Güstrow is sure.
"...Airfield Güstrow (german: flugplatz Güstrow, fliegerhorst Güstrow or Fliegerhorst Bockhorst, ICAO: EDCU)is an airfield 160 kilometer northwest of Berlin, Germany.
(...)
In August of 1938 the first unit was stationed at the airfield, which became Pilot Training Regiment (german: Flieger-Ausbildungs-Regiment) 22 on 1 April 1939. The unit moved to Warsaw in September 1940, after which several other training units used the airfield. On 1 February 3./JG103 moved to the airfield, but they left for Neumünster on 1 March already.
On 2 May 1945 the Red (Soviet) Army occupied the airfield, who reformed it into a firing range for Russian troops. ..."
https://forgottenairfields.com/airfi...strow-332.html