Waltham Vanguard Pocket Watch

51mm case, black and red Arabic numeral Montgomery dial, inside case back stamped "Keystone Watch Case, J.Boss, 14K gold filled, 7897419", gold filled, movement marked "Vanguard, Waltham, Mass, USA, 23 jewels, 2440374", 2-1/2 x 2 in., 96.2 gramsÿ - Provenance: Private Collection, North Carolina
Condition Report: seconds hand moving and keeping time when inspected, few slight cracks to dial, tarnish, wear to plating, few scratches to crystalÿ