A bit of wear through on the back gold fill, and the crystal is cracked at the sub dial, but otherwise this Air King was a steal at $31, especially as it came with working Waltham and Wittnauer!
Caliber 10BC movement
It sets, winds and runs
10K rolled gold plate case measures 30mm in diameter, 38mm lug to lug
Flex band has stainless steel bottom, unmarked top
This cleaned up nicely, with only a few scratches on the glass crystal.
Currently running very fast so needs cleaned and serviced.