This 1950s Longines Conquest power reserve is a rather uncommon vintage watch. This watch features a turning disk which displays the amount of power remaining in the mainspring, represented in hours. My picture does not show clearly-the winding crown is original and signed. The stainless steel case with well-preserved emblem on the case rear measures 35mm. This dial print was expertly restored while retaining the original applied markers. Overall, a cool and collectable vintage Longines.