Wonderful condition on this large 18k pink gold Mathey Tissot from 40's. Dial is in pristine original condition with waffle  texture ..gold numerals and markers with perfect set of gold factory hands. Print is in multiple colors....black, blue and red...with Kilometer scale. Movement is a Landeron caliber 48 with 17 jewels .....operating and running perfect. Case measures 37.2mm x 44.4mm overall, comes with brand new French padded strap.....ready to go. Case condition is outstanding with only couple small marks from perfect.....outstanding for its age. Measuring speed: Start the chronograph at a starting line or mark. Stop the chronograph at the next kilometer marker. The second hand is pointing at 6 o'clock.  Read the tachymeter value at that position and it shows 120, telling us the car was traveling at a speed of 120 KM per hour. Outstanding early chronograph in solid 18k pink gold......very collectible!