Buying a pre-owned watch can be one of the best decisions you make: you pay less than retail, you get access to models that are no longer made, and you take home a piece with a story. But it's also a world full of replicas, swapped parts and "creative" descriptions. I was scammed with a fake watch myself early on, and that lesson taught me to look at everything under the loupe. These are the 7 keys I apply every time I evaluate a watch, and that you can use before buying from any seller.
1. Be wary of a price that looks like a gift
Quality watches have a fairly stable market. If a model normally sells for $3,000 to $3,500 and someone offers it for $1,200, it's almost never a bargain: it's a red flag. Before buying, check the price of that model on several sites and in completed sales to get a real reference.
2. Ask for the reference and serial number
Every serious brand identifies its models with a reference (for example, CAJ2110 on a TAG Heuer Aquaracer), and many engrave a serial number on the case. An honest seller has no problem sharing them. With the reference, you can check that the dial, bezel, size and bracelet match what the brand actually made.
3. Real photos, from every angle
Be wary of catalogue photos. Ask for photos of the actual watch: dial, case profile, caseback, crown, bracelet clasp and, if possible, a short video of the seconds hand moving. An automatic has a smooth sweep; a quartz ticks once per second. If the listing says "automatic" and the seconds hand ticks, something doesn't add up.
4. Check the details replicas often get wrong
A date well centred in its window, crisp and well-aligned dial printing, even lume, a bezel that turns with firm clicks and clean caseback engravings. None of these points guarantees anything on its own, but several "almost right" details together are a clear warning sign.
5. Box and papers: a plus, but not everything
A watch with its original box, warranty card or receipt (what we call a full set) is worth more and gives peace of mind, because it helps trace its origin. But papers can be faked too, and many genuine watches have lost their box over the years. What matters is that the seller states clearly what is and isn't included, without beating around the bush.
6. Ask about the service history
A mechanical watch needs servicing from time to time. Ask when it was last serviced, whether the case was polished and whether any part was replaced. A replaced part isn't always bad, but you have the right to know before you pay.
7. Buy from someone who stands behind what they sell
This is the most important key. A good seller gives you a clear return policy, commits to authenticity in writing and doesn't disappear after you pay. At Mike Watch Trader, we check every watch before listing it, and if we're ever wrong, we refund 100% of your money. It's that simple.
Not sure about a watch?
If you're thinking of buying a watch, from us or from another seller, and you'd like an honest second opinion, write to us. We're collectors before sellers, and we'll tell you what we see, even if you end up not buying anything from us.