1960’s NOS OLLECH & WAJS (Swiss) Selectron Sliderule Military Aviator – FHF Cal. 96-4


Out of stock

A rarely seen 1960’s Vietnam-Era new old stock model that has been professionally inspected in-house at Localtime.

Ollech & Wajs [Swiss] is one of those cult brands that trully carries the full weight of their name. Their products were wonderfully designed and no expense was spared in using the best materials and movements available. Sliderules were useful on watches for pilots that could use them for a variety of much-needed information that the era’s technology did not offer, like rate of ascent/descent, average fuel consumption, ETA to destination based on speed, etc. This truly classic Selectron Sliderule aviator watch, is one of few and different Vintage O&W models we have discovered [the rest are listed separately in our store] and is in a New Old Stock vintage and original condition. The watch is wearing one of my own handmade Italian leather strap in tan that I think fits the watch extremely well. These straps can be purchased separately from my eBay store: 401105271426. I have included many photos of the watch, including some extreme macro shots I made just for fun.

As with all the watches I handle in-house,  the BIN price includes a 6-month written warrantee from the date of purchase. Please contact me for whatever questions you might have.

Extra: More information on my Localtime handmade straps! They are handmade in Italy to my specifications and come in 5 sizes (18/16, 19/16, 20/16, 21/18, 22/18) and 11 colours (Tan, Brown, Dark Brown, Black, Cinnamon Brown, Olive Green, Denim Blue, Grey Blue, Dark Smooth Brown, Vintage Green and Cognac Brown). Their length is 85/115mm and have a vintage tapering of 2+mm, depending on the lug width. They are approximately 3.50mm thick. A good quality pair of spring bars is included with each strap. Feel free to contact me for whatever questions you might have.

Important Note On Condition: Sometimes I am asked what I exactly mean with ‘professionally inspected 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 include a written warrantee with my buy it now price and I always describe what I have changed, if anything, on the watch.

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 Sliderule Aviator


Time, Date, Sliderule




FHF Cal. 96-4

Case Material

Plated Metal

Case Back

Stainless Steel

Case Size

40.25mm case, 41.50mm including crown

Lug Width



NOS & Working With Warrantee

Last Known Service

Inspected by Localtime – December 2018


Free Worldwide


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