Hektor 1.9/7.3cm black/nickel The First

Very interesting coupled HEKON with rotating lenses, bearing the earliest serial number we have ever seen, production officially starts with no.94140, probably delivered on the last days of 1931, in almost mint condition, optics later coated in the 1950s, only showing a few light cleaning marks and typical bubbles in glass, barrels also later refinished, note the IR index, with both caps and hood.