You are looking at an extremely rare, all original 18K solid gold Longines 13ZN chronograph from around the 1940's. This watch is universally considered one of the "Grail" watches by a great number of collectors and watch enthusiasts. 
Original dial, original  movement and case, even the crown is original. The watch was serviced a few of years ago by the previous owner. The dial is in real good condition for this model, most are worn out or repainted - not this one. There are obvious signs of wear on the watch, like minor dings and light scratches on the solid gold case back, but nothing significant.
This is the larger, the 36mm diameter version. It shows off ultra cool on the wrist.
Here is your chance to get one of the most iconic watches of the past century.
Shipping will be with full insurance.