Jumbo Electronic: IWC Tuning Fork
IWC Electronic Jumbo: Tuning Fork & Metal Durci
Very good and beautiful preserved condition of this iconic 1970s IWC Electronic: Humming at 300Hz in a extra-hardened metal-alloy case. Super-hard and scratch resistant with around 1'000 Vickers hardness and back-then in 1974 one of the most expensive tuning-fork IWCs, priced at around CHF1'000.
The case edges are clear and sharp. On the case back there are some very usual issues with the acier inoxydable durci.