Swiss Lings 21 Prix Chronostop watch, OC-120 calibre from the 1950s. Considering its age, the watch is in good condition (see photos which are part of the description). - case: 37 mm excluding the crown - thickness: 12 mm - strap width: 20 mm - Lapanouse movement with manual winding. Gold-plated case (reference hallmark on the back) - the 2 push buttons work well: the top stops the second hand & the movement, the bottom restarts them! It does not come back to zero like other chronographs. - hour markers in relief. - Scales: red telemetric and blue tachymeter -with a beautiful dial , which is rarer with these types of watches I ask you to look at the pictures carefully before buying The item will be carefully packaged and shipped by registered, insured mail.