"When I got home, I was going through them and out of an album fell this passport," said the guest, identified only as a former employee of the Motown Museum in Detroit. "And so, it literally fell into my hands."
Los Angeles-based appraiser Laura Woolley, an expert in pop culture memorabilia, startled the middle-aged man when she advised him to get it insured for $US20,000.
"I'm not kidding you," Woolley said. "Nothing comes up for Marvin Gaye. It's not a really common thing to see Marvin Gaye memorabilia."
Gaye carved a unique place in US pop and soul music history, recording such gems as Can I Get a Witness, I Heard It Through the Grapevine, What's Going On, Let's Get It On, Got to Give It Up and Sexual Healing.
His ex-wife Anna Gordy Gaye, who married Gaye in 1963, and whose brother Berry Gordy founded Motown Records, died last Friday in Los Angeles, her family said. She was 92; she and Gaye divorced in 1977.
- WENN