1930s Tissot Cal.15TL Mono-push Calatrava Chronograph Very Rare Black Sector Dial

1930's Tissot SS 37.5mm SS 37.5mm Calatrava design with famous Lemania Cal.15TL early monopusher chronograph with very rare black sector dial. The 37mm oversized case with Calatrava design, the black sector dial with silver lettering and large snailed tachymeter layout, and the Lemania Cal. 15TL early type monopusher chronograph, which was also used in Omega and military models, are all well known for their design and rarity. It is one of the best vintage chronographs in terms of design and rarity. The condition of preservation is excellent, and the precious black sector dial retains its precise print and black mirror luster, and the beautiful Calatrava case with its flat bezel retains its sharp edges throughout.