Thoresen Recipro-Register

A proper Landeron chronograph

Having repaired one of the oddball chronographs of the 1950’s, I now set my eye on a more conventional chronograph movement. My options, limited by my wallet, were confined to either a Venus, Valjoux, or Landeron calibre which were the most common of the period. There were others to be sure but the majority fell under these three Swiss manufacturers. Continue reading “Thoresen Recipro-Register”