I bought this over the weekend and need help with a date and any other information I can get, I wrote to Longines with the S/N on friday but have no reply yet.
I have never seen a small Longines Hour Angle watch before (31.5mm bezel), it has a 12.68Z centre second movement S/N 5749951.
(The 2:00 crown rotates the outer part of the face).
This is the only photo I have, until it arrives from England.
I have looked at dozens of Longines photos and as far as I can see, Longines only started putting the 'winged hourglass' on the faces of watches in the early 1950s, maybe the face has been restored and had the logo applied then?
(It looks like a very nice original face though!).
Was it some special made in the 1950s or was it a short run in the late 1930s/early 1940s with 12.58Z just before the 12.68N went into production?
I don't know the history of the 12.68 type movements, so I'm just guessing!
Anyway, I guess I will have to wait until it arrives so I can post more photos, hear from Longines and from Longines collectors.