from wingspalette
A two-seat conversion of the Spitfire Mk.IX made in the Soviet Union by the No.1 Aircraft Depot, Leningrad, in 1945.
Artist: © John Weal
Source: Air International Magazine, January 1983 (Vol.24, No.1)
Later also this one.
I know that some 2 Seat Spitfires IXUTI were flown by 26 and 27 GvIAPs PVO, both Leningrad AA units.
I'll try to find a photo.
Zoran