Omega Seamaster 120 ref. 166.027 in very good condition.
Case and bracelet has been buffed and they don't present any important damage or issue. The case back has some fading but the original logo is still readable. The bracelet is not stretched, close properly and has length enough for a 19,5cm wrist.
The dial is very nice and well preserved with no shadows or spots, hard to find in this condition. The tritium plots and matching hands has a very nice patina
Original crown, original crystal with the Omega logo has some light scratches. 
The bezel insert is lightly faded to a dark gray and has some light scratches on the edge. 
The movement has been recently serviced from the previous owner, it works properly and has a good timekeeping and amplitude. Serial number 25.xxx.xxx dating around 1967. No box or papers, no service papers, not guaranteed for timekeeping or waterproofs.