What is this close-up picture? (WotsThat: Vending machine button texture (macro))

Question

What object is shown in this zoomed-in close-up photo?

QuartzMiner · Accepted Answer

Vending machine button texture (macro). The first coin-operated vending machines date back to ancient Greece, where a device dispensed a fixed amount of holy water when a coin was inserted, using the coin's weight to briefly tip a lever.

Answer: Vending machine button texture (macro)

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