Model Name

Bulova 23 Calendar

Case Date

1959

Case Serial

D650414

Signature Locations

Inside case, outside case, movement, dial

Case Signature Format

Inside - "Bulova, Fifth Ave, New York"

Outside - "Bulova"

Movement

10BPAD, 23 Jewels, 6 Adjustments

Movement Date Code

1957

Case Material Description

10K Gold Filled (yellow)

Case Dimensions

43.5mm lug to lug x 34.3mm without crown

Case Type

Snap back, round

Crystal Specifications

29.8mm, round

Other Details

Back of case also reads, "Gold Filled 10 KT, Shock Resistant, Self Winding, Anti-Magnetic"