A very rare Omega ST 131.019 with red target technical dial purchased in Germany on the 29th April, 1968 with original paperwork and box.
 
The black matte dial has two sets of second layers and a red painted Omega logo and white Omega script, very striking!
 
This model has a snapback style case and a caliber 601 adjusted to two positions.
 
A very nice and appreciating full set Omega.