The "Lost Dutchman Mine" is a legendary gold mine supposedly located in the Superstition Mountains 60 miles east of Phoenix, Arizona. Who produced this item is unknown, the design is vaguely similar to older medals. It was supposedly produced in connection with a 1966 episode of the television show "Gunsmoke" titled "The Treasure of John Walking Fox" which starred Leonard Nimoy as an Indian, and was broadcast on April 16, 1966. The medal does not appear in the episode but a California Gold Rush Octagonal Slug Medal appears. For more information on the "Gunsmoke" episode, please visit: Coins on Television - Gunsmoke
For information on a similar medal, please visit: California Gold Rush Octagonal Slug Medals

Brass, 38 mm, Octagonal, 34.38 gm
Obverse:
Miner with pan
LOST DUTCHMAN
1860
Reverse:
Rattlesnake
LOST DUTCHMAN MINES
FIFTY DOLLARS

The "Lost Dutchman Mine" story was the basis for the 1949 film "Lust for Gold" which was based on the 1945 book Thunder Gods' Gold by Barry Storm.