Fratello wrote an article on this watch six years ago and can be found here:
Price on request
1966 Omega Speedmaster 105.012 Box & Papers
£0.00Price
Specs
History
Condition
Reference: ST 105 012 - 66
Serial: 24xxxxxx
Year: 1966
Case: Stainless steel, Assymmetrical case, signed Omega plexi (original)
Dial: Stepped dial, T Swiss T, original lume on dial and hands
Dimensions: 42 mm excluding crown
Function: Chronograph timing, time keeping
Caliber: 321
Strap: Omega bracelet 1039 (67) / 516 endlinks