The same year Costakis, with his family, left the Soviet Union and moved to Greece, but there was an agreement that he should leave 50 per cent of his collection in the State Tretyakov Gallery of Moscow.
The same year, Costakis, accompanied by his family, left the Soviet Union and moved to Greece; however, an agreement was reached for him to leave 50% of his collection in the State Tretyakov Gallery of Moscow.