Two Hamilton Watch Co. "992B" Open-face Watches

Description:

Two Hamilton Watch Co. "992B" Open-face Watches, both with arabic numeral dials with sunk center and seconds, marked "Hamilton," stem-wind, lever-set, damascened 21-jewel movements, the 14kt white gold-filled case marked on movement "U.S. Govt," and "no. C45534."
Estimate $300-500

yellow gold-filled case no. C24771, with hairlines to dial, the white gold-filled case has no hairlines to dial, both winding setting and ticking.