Gold Gulch was the largest funfair concession built for visitors at the California Pacific International Exposition, a World's Fair that was open from 1935 to 1936, in San Diego, Southern California, United States. Gold Gulch was a section celebrating the California Gold Rush and the American Old West.

Gold Gulch, located within the World's Fairgrounds in Balboa Park, was a 21-acre Old West mining town-ghost town re-creation for fairgoers to experience the atmosphere of a mining boomtown.
It was described in the Exposition Guide Book as "a moviefied" version of riproaring '49 days.
Gold Gulch occupied the canyon between the 'Casa de Balboa' and 'Pepper Grove,' southeast of the Spreckles Organ Pavilion.
It was composed of a dance hall and a music hall, rustic unpainted shacks, a brick bank with iron-barred windows, a "Chinese restaurant and laundry," and a Hanging tree with 'dummy' hanging. Barkers lured visitors to a "shooting gallery" where a visiting "sharpshooter" hitting the bull's eye put all the lights out in the Gulch.
An "Indian Village" was nearby, with trading posts and events.
Gold Gulch charged no admission, but its shops and attractions did. "One could have coffee in a tin cup, beer 'by the scupper,' badges and rings made from horseshoe nails by the blacksmith, and have a photograph taken with fake beard, six shooter gun prop, a ten gallon cowboy hat on a mine-pack burro."

I would imagine that these coupons were purchased and used in the attractions within the Gold Gulch funfair instead of using cash in the shops and attractions.