Good day all ! I'm selling one of my beloved 186.004 straight from the seventies ! Produced between 1977 and 1979 this model is not that common. This watch precede the Alaska IV prototype, produced in 1978 for the NASA shuttle pilots. The model was not selected by NASA at the end. For more information about the watches itself I invite you to have a look at this very detailed website: https://www.omegalcdspeedmaster.com/ The watch has just been serviced, it was fully cleaned, new battery and the crystal has been changed (the original one is included in the sale). The Cal1620 is working has it should. I choose not to polish the watch to keep it original so as one can expect the case has some scratches due to normal usage. As you can seen on the next pictures, under bright white artificial light a lot of scuffs and buffs are showing as always, but those are not seen under normal conditions like on the others shots. More pictures and videos available on request. There is a crack in the bezel at 10. This piece is not available in Omega and difficult to find second hand, so I left it as it was and the price is taking it into account. I own the watch since few years and the Bezel didn't change, but it is possible to fill the crack with an epoxy solution to stabilize and cover it. Once again I choose to maintain originality. On the pictures you can see it next to my Alaska IV Prototype. Very little difference can be seen by an untrained pair of eyes. The easiest to spot is the lack of "light" mention on the prototype dial since tritium beta light was inserted behind the screen for a 24/7 backlighting. Once again for the complete list of difference I invite you to have a quick look on the website linked above if you want to see them all. I'm selling it just because I have 1 Alaska IV and 2 186.004. It's time to make some space for other projects! The sale is for watch only and the JB Champion is not included in the sale. Me and the watch are located in Paris, F2F are more than welcome, shipping to be discussed to buyer preference. For sale at 2500 euros + ship ONO, I'm looking for a sale but I'm open to trades, do not hesitate to contact me. I'm available for any questions you could have regarding the watch ! Time to buy an uncommon watch with those 70s vibes ! Many references available on request https://omegaforums.net/threads/very-nice-buy-from-bazderome.120924/ https://omegaforums.net/threads/great-trade-with-bazderome.115155/ https://omegaforums.net/threads/bazderome-is-a-great-buyer.85740/ https://omegaforums.net/threads/bazderome-is-a-great-buyer.75280/ https://omegaforums.net/threads/very-smooth-transaction-with-bazderome.73193/ https://omegaforums.net/threads/great-transaction-with-bazderome.66707/ Thanks OF for the space