1960’s PORTEX [Italy] “Substar” 20 Atmos Diver – ETA Automatic Cal. 2782

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From the 1960’s, a PORTEX [Poertex di Franco Dell’ Oca, Milan-Italy] “Substar” 20 Atmos, ETA automatic Cal. 2782 with a stunning dark blue dial and lollipop sweep hand that has been professionally inspected in-house at our Localtime Spa.

A tool diving watch from any angle you look at it, it comes from Italy, a country that gave us many beautiful diving watches during the 60’s and 70’s. The large stainless steel case [38×44.50mm, 42mm including the oversize screw-in crown] has been professionally cleaned [not polished] and is in great condition. Boasting a dark blue dial, rotating bezel and lollipop sweep hand, this classic sport watch comes on a new old stock tropic-style rubber strap from the same period, that we think compliments this lovely timepiece very well. We have made many photos of this watch, including some macro close-up shots we took just for fun.

As with all the watches we handle in-house here at the Localtime Spa, this also comes with a 6-month written warrantee from the date of purchase. Feel free to ask any questions you might have.

EXTRA! Check out our own Localtime straps: Handmade from premium calf leather to our specifications in Italy they come in 5 sizes [lug width/buckle width]: 18/16, 19/16, 20/16, 21/18 and 22/18mm & 4 colours: tan, brown, dark brown and black. We sell these separately in our eBay store under eBay item number 401105271426 and you can also see them in the last photo here.

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PORTEX [Italy]

Production Period



Substar 20 Atmos


Time, Date, Diver's Bezel




ETA Cal. 2782

Case Material

Stainless Steel

Case Back

Stainless Steel

Case Size

38mm case, 42mm including screw-in crown at 3h

Lug Width



Working With Warrantee

Last Known Service

Inspected by Localtime – August 2016


FREE [Express & Fully Insured]


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