Question is whether the Japanese sent one to Germany in an exchange of technical data, because otherwise how would Russia have got one? Russia didn't invade any part of Japanese Empire because they were too busy with Germany and then needed to regroup.
This aircraft is post war. Not to remind you that after WW2, Germany was split up into two (4, respectively) parts. Later these were known as Western and Eastern Germany... In Eastern Germany - DDR - they had Russian militery technic on a regular basis.
Hi !!!
In addition.The first tests of Yak-23 were finished on 21 August 1947.In the same year, pilot S.N.Anochin presented the new plane during the airshow on Tushino airfield near Moscow.Yak 23 was a development Yakovlev's figters powered by a jet engine.The early jet Yak serie consists of Yak-15,Yak-17,Yak-19,Yak-23 and Yak-25.There some pictures and profiles.
pics 1-3 Yak-15
pics 4-6 Yak17 ( two first Yak-17UTI )
pics 7 Yak19
pics 8-11 Yak23 ( the last one Yak-23 UTI )
According to my knowledge, no.It is the Rumunian prototype of the training version of Yak23.Obbreviation "DC" stands for "doubla comanda"- two seats.The plane was a standard Yak 23 adaptation.The project was issued by CTIA ( Military Air force Institute of technology ) in 1956.The second cockpit was mounted instead of the rear tank fuel.The first cockpit was for a learner,the second one for an instructor. It was different from the Russian version of the a/c where the first was a instructor and the second pupil.The aircraft wasn't armed.