Swiss Minerva military stopwatch with mechanical, manual winding movement with pheon arrow military mark and T.P. 1/10 mark at the back. The broad arrow pheon mark is one of the oldest symbols of government or ordnance. It is the traditional symbol of British military property. T. means tritium and P. means phosphorus painted watch dial. 1/10 means that sundial counts tenths of a second. It has 6 divisions between two numbers, each representing 10 seconds from the black scale with 0,1s resolution, and 10s respectively 10min per hand resolution. Metal case diameter: 51 mm without crown, 65mm incl. crown, case thickness : 14 mm Some scratches and discolouration in places, please see the photos, but in overall the stopwatch is in a very good working condition The Montblanc watchmaking story began in 1858, when Charles-Yvan Robert founded his workshop in Villeret, in the Swiss Jura Mountains. This marked the beginning of the historic Minerva era. Over the century-and-ahalf that followed, Minerva would become one of the world’s leading specialists in precision chronometry for professionals.