Complete set of 14 brass pocket watch winding keys, covering sizes 00 to 12 in one box.
⭐ At a glance
📏 Sizes 00–12, 14 keys in total
✅ Covers virtually every common pocket watch winding size
📦 Supplied with original box and papers
✔️ New, unused set
🔧 What it does & how to use
A pocket watch key is used to manually wind the mainspring (and, on some watches, to set the hands) via the square-ended winding arbor found on older pocket watches that don't have a crown. Each key in this set is numbered by size, so you simply pick the one that matches your watch's winding square rather than needing a single key for every watch you own. Useful for hobbyists, collectors and repairers who work on a range of pocket watches.
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Open the case back to expose the winding arbor (or locate the winding square on the watch front, depending on the model).
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Try keys in size order starting from a likely fit — the key should slide onto the square with no play but without forcing.
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Wind gently, turning only in the correct direction for that movement; never force a key that doesn't seat properly.
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Use the same key to set the hands if your watch uses a set-square rather than a pendant/crown.
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Store keys back in the numbered box for quick reselection next time.
