I bought this watch from this forum 6months ago. As much as I love watches and vintage ones in particular I'm trimming my collection. Since i bought it i never weared it so i decided to sell it.

It is still in the same condition as described by the former owner:

Here is the describtion of the seller i bought it from in August

The following description of the model is lifted straight from Tom Dick's original listing that I bought it from so credit to him for that:
I wouldn’t think it needs much introduction to Omega enthusiasts but just incase; The Omega Speedmaster 'Speedsonic' was introduced in the early 1970's as Omegas flagship chronograph, considerably more expensive than the moon watch or other Omega chronographs and the only one (other than the limited edition Speedy 125) that was Chronometer certified. The Speedsonic was an adaptation of Omegas mosaba movement or as we know it the F300, a mechanical movement which ran on a battery and was controlled by tuning forks which vibrated at a frequency of 300Hz
The movement was made under licence by Bulova, the chronograph version then adapted with basically and extra 'layer' for the chronograph operation. The movement in this watch was known as the Mosaba meaning 'montre sans balancier' translates for 'watch with no balance'
In 1975 a new Speedsonic was £190 compared to £124 for the moon watch so it sat at the very top of Omegas Chronograph range and the price tag really did reflect the build quality of these watches, at 1/3rd more expensive than a moon watch they needed to be something special…………. They are!
So good was the quality that in 1978 Omega send approximately 12 of this model were sent to NASA with Radial Dials (and Star made cases) to test them as a possible replacement for the famous 145.022 moon watch, they passed all of the rigorous NASA tests (I am fortunate to also own one of these watches #12)
They were produced in small numbers (due to cost of the movements) and when new was one of the most expensive Omega chronographs in the range in its day it was amongst the most advanced Omega made, even by today’s standards it is a work of genius and becoming increasingly hard to find in good condition.

The condition hasn't changed from when I bought it given it's only had a couple of weeks wear probably on and off.

This example is good cosmetically , the case nice and original some age related marks (worst pictured above) but these would easily refinish and the watch is fully functioning and working correctly including the date and day (notoriously an issue).

Condition:
Case: Original condition, some age relating marking and a few dinks but nothing that detracts.
Case-back: Completely original and superb with only the lightest of marks
Bracelet: Correct ribbed rally band which has very little sign of wear as pictured
Clasp: Omega
Dial and hands: Perfect and a lovely honey patina to both dial and hands.
Crystal: Original crystal no marks I can see
Box and papers: Original papers and instructions, also supplied with Omega service pouch. Box isn't original.



Price: I've looked at Chrono24 and there is only one of the same model priced at € 1800 and a range of other Speedsonic's without papers, up to € 2500 from an over optimistic seller.

So I feel that € 1700 seems to be a fair opening price for current value.

Final note: I know I have less than 200 posts, but I've requested special dispensation from the mods who have checked out my and ebay profile 100% feedback. Selling this watch on here because I would like it to stay in the community of Omega experts I bought it from. Any questions please pm me.

Thanks to OF for the Space!

 

Offers also welcome

 

Watch is sold, funds are received and the watch is already on the way to its new owner.
Thanks a lot to the very nice buyer and thanks very much to OF for the space