Natalia Gutman & Sviatoslav Richter, 1991, Pushkin Museum, Prokofiev Cello Sonata (the sound needs some tolerance):

Same artists, same location, 30/12/1985, Chopin Cello Sonata (decent sound):

Gutman with Oleg Kagan, 1981, Moscow, State Academic SO/Evgeny Svetlanov, Brahms’s Concerto for Violin & Cello: