Just received my Oct.1961 8531 steel IWC Ingenieur watch from overhaul. To my horror the black pie-pan face has been replaced by a black regular face and the cyclops lens has been replaced by a regular (no magnifier) lens. I'm certain this action has greatly devalued the watch but I'm seeking other views/opinions before I return the watch to Schaffhausen for retrograde restoration, (both replaced parts were returned to me with the watch).