That must be fairly early in the war, probably in France May/July 1940. The trees are in full leaf. The mailed fist was an early emblem of III./St.G 51.
Cheers
Steve
Are you sure that's 1941. That emblem was replaced when III/St.G 51 was reformed as Stab II/St.G 1 in July (?) 1940. The later emblem was a Tyrolean eagle. If that's 1941 it would imply that the earlier emblem was longer lived than previously supposed.
I think the date is probably incorrect. The place is definitely wrong as St.G 51 was never based in Belgium.
Whether that's Chekhova or not I don't know. Anthony Beevor has written a book about her and her associates, particularly her brother, and their exploits during the war.