Circa: 1963

Model: Seamaster 30

Caliber: 286

Movement serial #: 20795298

Jewel count: 17 jewels

Movement type: Manual wind

Case model: 135.007-63

Case material: Solid stainless steel 

Case gasket: O-Ring rubber gasket 

Crystal: Acyrlic crystal 

Crown: Signed

Case Diameter excluding crown: 35.2mm

Case length lug tip to lug tip: 42.2mm

Dial: Factory original finish

Does not have original band, papers, or box.  I opened the back to check validity, and although I am no jeweler, it proves to be real.  Runs when wound up although not sure how long it will run on a single wind up.