AntiqueClocksPriceGuide.com

Jan 2020 - 510
Antique American Clocks
Seth Thomas "Lever No. 18", USAF, ca. 1939.
From the catalog, "An 8-day, 11-jeweled lever time
movement No. 5160."
The 10-inch diameter case is black Bakelite, with wear, with a hinged moisture-resistant screw-down bezel.
The cork seal has been mostly lost; the glass replaced with Plexiglas and is not secure in the bezel.
Sweep seconds hand; the
clock is running nicely.
The label on the side, "USAF, MX-771" is associated with the development of land-to-land missiles in
I didn't know they made ships clocks for the Air Force; I suppose plastic (Bakelite) was used to reduce the weight.
Seth Thomas Clocks & Movements
, Vol. 2, page 777.