I don't think jumping minutes are very common at all, right? If it took A. Lange & Söhne inventing it in 1999, it's gotta be rare https://www.alange-soehne.com/eu-en/manufacture/art-of-watch...
replyThat's just presenting improvements to a mechanism; while it isn't common, particularly for watches, and I don't know much about earlier examples, they do seem to exist.
replyFor clocks, however, there is the iconic Swiss railway clock [1], which dates back to 1944 and has a jumping minute. For those, however, the jump is actually meaningful in itself, in they're synchronized by a master clock that has a one minute impulse, and the jump is actually the moment of the impulse.
Appreciate the feedback! It cares, yeah, but being off-by-a-minute doesn't really dock your overall score very much. I figured without that, a "perfect" would be much less meaningful.
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