SEIKO AUTOMATIC BELL-MATIc Click below for more images:

Caliber:  4006 Jewels: 27
Movement: 4006-6000 Dial: 4006-6000T
Year:  August 1969
Measurement: 42mm diameter
44mm lug to lug.  
Lug width: 19mm Thickness: 12mm
Comment: Mechanical alarm with 27 jewels cushion case.