Service Repair and sales of Wrist and Pocket Watches.  All work carried out by graduate certified watchmaker,
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One of the best genuine examples
of a Omega Pre-Moon watch 321 you will find
complete with original stretch band & spare aged bezel.
watch is running but not serviced, can be serviced for a additional charge
I service many of these each year.
Case No  105012-66
Movement serial No 24537972  year 1966
Band No  1039
Below I have added some extra information answering the constant question of  applied logo or not for 66, this watch is correct for all examples below the original owner had this watch from new.
SOLD

Change on the dial the Omega logo. 1957 till 1968 Omega used the metal applied Omega logo which is preferred followed by the white marking  metal applied logo was probably changed into white because of the cost. Omega was the only brand back then using metal for their logo on the dial.
The case of the Omega changed in size three times The first Speed master, the CK2915 was used until 1959. After that, the CK2998 was produced slightly bigger. Once the Professional-mark is on the dial, they use a bigger case (42mm instead of 40mm).Look below for the images

The push buttons changed from (diameter) 4mm to 5mm in 1962. The CK2915 and CK2998 used the 4mm push buttons and since the production of the ST105003 Omega used the 5mm push button. The left picture below is the 4mm push button and the picture on the right is using a 5mm push button.

The  crown  changed in size also 6mm 6.5mm & 7mm.