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Mom would drive into Santa Monica to wash and fold mountains of towels, socks and underwear at a coin-operated laundry on Montana Avenue.

Watch it rise in the sky from the Griffith Observatory, which has free public telescopes as well as coin-operated ones.

For the zoomers reading, that’s a coin-operated phone you can use to make calls.

While in line to pay, I watch children take turns on the coin-operated Sandy horse.

“There are obvious built-in themes and parameters for artists to respond to,” Muccia said of Quarters, its name a sly nod to both coin-operated laundry and the gallery’s quarterly schedule.