Never seen before... a double signed Omega Tissot Oversize Calatrava from the end 30's. Normally only chrono's have been found with this double signature so this might be unique! It is believed that Tissot also put Omega on the dial in new markets at the end of the 30's to promote the brand and highlight the ties with Omega (mainly in South-America). The original dial has silver printed numerals and outer track and being black makes it extra rare. The calatrava case measures a whopping 38mm and is chrome with a steel back. Movement is Cal 27 Tissot and working well. Attached is a period style grey pigskin strap. Really rare piece!