Diablo ManufacturingBorn:1945 Died: Maker's Mark:
"DIABLO" with or without three-tined pitchfork logo
The company was founded in Oakland, CA and was co-founded by Clinton DeWitt and Bill Magers. In 1963 Diablo bought out the Visalia Stock and Saddlery company as well as patent rights to the Visalia Humane Bit. Diablo Marks prior to 1950 do not have the trident, that trademark was added after 1950.
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