@wandeljw,
I'd not have guessed your movie, Wandeljw, without that clue. That's one I never saw. I'll keep a lookout for it on cable TV.
I had forgotten that 'Ripley' and 'Strangers on a Train' were written by the same author (Highsmith) until I watched "The Talented Mr. Ripley" last week. I also discovered it had another title: aka "The Mysterious Yearning Secretive Sad Lonely Troubled Confused Loving Musical Gifted Intelligent Beautiful Tender Sensitive Haunted Passionate Talented Mr. Ripley" - USA (complete title)
aka "The Strange Mr. Ripley" - USA (working title)
Late thirties:
At the fund-raising ball, she removes the wedding ring she so cherishes and offers it to the auctioneer for the cause. Not to be outdone, her recently widowed companion quickly removes and offers her 'not' so cherished ring.