1960’s OLLECH & WAJS (Zurich) Vietnam-Era ‘Selectron Computer’ Chronograph – Valjoux Cal. 72



1 in stock

This is only the second example of these watches that I have the pleasure to have. The first one was sold to me by Mr. Albert Wajs himself, when I had the pleasure to meet him for the first time at his house in Zurich almost 7 years ago. Ollech & Wajs is one of those cult brands that truly carries the full weight of their name. This classic Vietnam-Era ‘Selectron Computer’ aviator chronograph watch has been inspected by my watchmaker and is in excellent condition throughout both aesthetically and mechanically. The case is original and unpolished with no serious scuffs or scratches, the dial is in excellent condition and the hands have aged graciously. Both dial and hands still have their original lume. The movement has been oiled and regulated the gaskets changed and the plexiglass lightly polished.  The watch is wearing one of my own Localtime premium leather straps in ‘vintage green’ that fits the watch extremely well. These straps were handmade for me in Italy, they are listed separately in the store and you can also see them in the last photo of the listing. Please contact me for whatever questions you might have.

Important Note: Sometimes I am asked what I exactly mean with ‘professionally inspected or serviced by Localtime’. Here is my theory on vintage watches: as a purveyor of vintage watches, my effort is to always do only what is needed to the watch. I do not buy ‘junk’ watches to resell. I am choosy with my purchases and always sell watches that are, to my knowledge, authentic and in good condition. I first inspect the watch, both visually (cosmetically) and then mechanically. If I judge that the watch is not yet in need of a full service then I do not put the watch through a service which, by the way, entails a lot of risks too. Instead, I give it what I call my ‘Spa’ treatment which will include a cleaning, changing of gaskets, oiling, lubricating and mechanical testing. If the plexi is heavily scratched or discoloured and it can not be cleaned, I change it. If the crown is wrong or worn, I also change it. Now, if the watch is in need of a full service, then my ‘professionally inspected’ description becomes ‘professionally serviced’. In both cases, I mention what has been changed (if anything) on the watch and I include a written warranty with my listed price.

Important Note On Straps/Bracelets: The straps I use on my watches (leather, canvas, suede, rubber) are always brand new, unless otherwise mentioned and, in most cases, I also sell them separately in my store, in different colours and sizes. In the case of metal bracelets, if the watch is NOS, the bracelet is also unused. If the watch is pre-owned with its original bracelet, then the bracelet is also pre-owned, unless otherwise mentioned. Either way, if in doubt, please ask.



Production Period



Selectron Computer Chronograph


Telemeter, Tachymeter, Sliderule




Valjoux Cal. 72

Case Material

Stainless Steel

Case Back

Stainless Steel

Case Size

39mm case, 41mm including crown at 3h

Lug Width



Pre-Owned & Working With Warranty

Last Known Service

Inspected by Localtime – June 2021


Free Worldwide


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