cvalue13
·Still useful as minute 4-6 costs the same as the first 3. Also the ch age in the US was mid 60’s or so? About the same time it stopped appearing on chronos.
Also let’s look at watches that have it vs date vs if the have US MFG codes on the movements.
sure, and you might also contact the manufacturers and ask whether they did or did not make country-specific dials for the Americas (regardless of movement code).
But, if you’ve got that person on the line, you could instead just ask them about the 3-minute marks.
I’ll save you the time (that you weren’t going to spend anyway) and say that brochures from these companies for the American market still showed these watches with the 3.6.9 marks - if they made concurrent variants without these marks at all, they weren’t marketing them consistently (if at all), and I would expect not shipping them consistently (if at all)

