Watches. It's a very fun hobby but also very annoying and can be very expensive. I've bought and sold countless Rolexes, Omegas, and Grand Seikos (for example).
After culling my collection down to 2 (and using a lot of the sales to fund house repairs and our upcoming 3rd floor), I am down to an Omega Seamaster Pro (white) and a Grand Seiko SBGA211 (Snowflake).
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