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We take trades against any of our watches!!! We also buy watches and watch packages.

This is a stainless steel Fortis B42 Marine Master 647.10.41. It has a White composite rubber strap with a stainless steel Fortis triple deployment buckle, and a scratch resistant sapphire anti-glare coated crystal. It has a pull out winding crown, and a solid screw-down case back engraved around the perimeter with “FORTIS B-42 – OFFICIAL COSMONAUTS AUTOMATIC – 20 ATM,” and a serial number. In the center medallion is engraved the Fortis logo, “FORTIS – 647.11.158 – ROSCOSMOS,” and the Roscosmos emblem. 

The 44mm diameter solid three-body case, curved lugs with screwed bars, and flat reeded-edge bezel are polished/brushed. There is a graduated unidirectional revolving bezel for the decompression times with Arabic numerals every ten minutes and a luminous dot triangle at the 60-minute mark. It has a White Full Lume dial with Arabic numeral hour makers and square/ baton indices, with a triangle at 12 o’clock. There are black baton hands, a blue center sweep second hand with a luminous dot indicator, and there is a luminous white minute/second scale with Arabic numerals every five minutes. Around the perimeter is a luminous 24-hour ring indicated by the blue second hand. It has a rectangular combination day and date aperture window at the 3 o’clock position, and it’s water resistant to 200 meters/660 feet. It has a 40-hour power reserve, and the 13mm thick case, dial, and movement are all signed. 
This Fortis B42 Marine Master 647.10.41 has a mechanical automatic self-winding Fortis caliber 2617 (base ETA 2836-2) movement. It’s copper-colored, and constructed with 21 jewels, a shock absorber device, and a straight-line lever escapement. It includes a monometallic balance, a self-compensating flat balance spring, and the mechanism oscillates at a frequency of 28,800 vph (4Hz). The Fortis B42 Marine Master 647.10.41 was introduced in 2016. 

Pre-Owned in Excellent condition with original paperwork and travel case!


BRAND: Fortis

MODEL: B-42 MarineMaster ROSCOSMOS 647.11.158

MOVEMENT: Automatic – Swiss

CASE: Stainless steel

CROWN: Push/Pull Crown

SIZE: 44mm

LUGS: 22mm

DIAL: White Full Lume dial with blue Seconds hand

BEZEL: rotating diver

CONDITION: Pre owned – Excellent

BOXES/PAPERS: Original Fortis warranty Cert, manual, travel case, etc – Everything you see in the pictures


STRAP/BRACELET: – Original Fortis White Rubber strap and Fortis steel Deployment buckle.


Trades welcome!!

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Let us know what you have in your collection!! I consider all watches in trade! Please upload pictures and include details of your trades through my Trade/Buy tab at the top of my homepage.