The "World of the Unexplained" in San Francisco was a museum of oddities.
The attraction was also known as the Ripley's "Believe it or Not" Museum.
The two museums were open from 1972 to 1985, the other was located in Gatlinburg, Tennessee.
Actor Leonard Nimoy of "Star Trek" made advertisements for the places.

White metal, 28 mm, 7.53 gm
Obverse:
WORLD OF THE UNEXPLAINED
FISHERMAN'S WHARF
SAN FRANCISCO, CALIFORNIA
Turbaned head with the legend:
PYRAMID POWER, MAGIC, PSYCHIC PLANTS, ESP, PARAPSYCHOLOGY,, ASTROLOGY, AURAS, CETI
Reverse:
GOOD LUCK SOUVENIR
Horseshoe and wishbone