Prices for pre-owned Rolex watches have been on the slide for almost a year after posting record highs. The biggest reason for the price decline, analysts say, was a surge of additional watches to the market. Watch prices quickly followed suit, entering a months-long decline that is only now beginning to show signs of leveling off. But the tumbling price of used luxury watches like Rolex, Audemars Piguet, and Patek Philippe can also be explained by a simple economics principle: supply arriving to meet demand. "The price correction was mainly driven by the increase in supply," wrote Morgan Stanley equity analyst Edouard Aubin and colleagues.

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