GMT Rectangle Dial/3186

[OneMore]

Hi, I was wandering what is the earliest Z serial number found with a 3186 movement is?

[ronaldjohn123]

i have a z48 with paper warranty 2007

[sheldonsmith]

From https://www.minus4plus6.com/paracromblu16710.php

wchiang on TimeZone had the opportunity to handle multiple M-serial 16710 with calibre 3186 and discovered another type of dial face. The infamous "stick II" font on the dial (as opposed to the traditional "roman II ") has already been documented, but there is also a 3rd type of font that looks more like a rectangle.

The rectangular II dial is very interesting; it is not either "old" or "new". It is very random. While it was found on a M23XXXX with 3186, it was also found on a Z77XXXX with 3185.

wchiang discovered the following:

Commonly seen on older 16710 - Roman II
Z77XXXX - 3185 Rectangular II
Z8XXXXX - 3186 Rectangular II (reported separately)
Z96XXXX - 3186 Stick II
M23XXXX - 3186 Stick II
M23XXXX - 3186 Rectangular II
M30XXXX - 3186 Stick II
M30XXXX - 3186 Stick II
M36XXXX - 3186 Stick II
MXXXXXX - 3186 Stick II reported by Tahoeblue (above)

There is no real pattern for the rectangular II to show up and apparently very random on which calibres, 3185 or 3186. Besides the difference in numeral "II" wchiang also observed the following several differences on the two different dials:

The links are live and there is more data on the webpage.

~ Sheldon