This is a vintage Longines 6666-1 which dates to 1955.

For its age, the watch has a very large case, measuring 34.4mm in diameter excluding the signed Longines crown. For its age, the case is in good condition with polished lugs and bezel, brushed sides and a mixed texture case back.

The hand wound movement is running well and keeping good time for a vintage watch. 

The dial shows some age related wear, giving the watch a real vintage feel. 

It has been fitted with a brand new crystal and comes on a new leather strap.