Glossary · Mechanism
Click spring
The small leaf spring that presses a click into engagement with its ratchet wheel.
Explanation
The click spring is the small leaf or wire spring that presses the click into the ratchet wheel's teeth. If it weakens or breaks, the click can lift and let the mainspring unwind suddenly through the winding work — a sharp bang that can damage the train. It is a tiny, easily lost part and a standard service check.
In the object catalogue
Catalogued objects whose own source record mentions “Click spring”. The quoted line shows where; it is the seller’s or museum’s wording, not independent verification.

Clock
Johann Baptist Beha Model 589 Cuckoo Clock
“This carved wooden cuckoo clock is catalogued by the seller as model 589 by Johann Baptist Beha, dating to circa 1895. The carved wooden case features vines, foliage, a perched …”

Wristwatch
Greubel Forsey Signature 1 Stainless Steel
“The Greubel Forsey Signature 1 is a manual-winding wristwatch characterized as the brand's first time-only model encased in stainless steel. This particular example is described…”