Yes she did. And Ruth Paine testified that she was the one who found it. One of Marina’s statements (CD79) said she saw it lying on top of the dresser. Nothing about a cup. Another one of here statements (CE1820) said that the police found it. An FBI report (FBI 105-82555 Oswald HQ File, Section 16, p. 93) says that the police found it on the dresser.
Was there ever a ring there, and was it actually in a cup? Who knows?
But what the hell does that have to do with who killed JFK? Nothing, unless you’re desperate to invent “evidence”.
You mean KGB informant (according to KGB true defector Pyotr Deriabin) Marina and Russophile Ruthie gave confusing, conflicting testimony?
Imagine that!