Here is a very nice condition Omega Seamaster 300, SM300, 165.024, Circa 1968 - Head only, no strap. Plenty of pictures included for your review.
Bezel rotates and was informed is second to last type.
28.2 mil serial cal.550 movement. I rotate the watch with others at a week/two week time period and have not seen any issues with time keeping and winds as it should. Service history unknown.
Dial and Hands are service replacement.
US Sale at $2,850 via bank wire w/expedited shipping.
Local pick up can be arranged during the week in the Newark, NJ area or weekend in Northern Virginia
References available from this and/or other forums.

Here are the pics:
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