
Cal. 20F is not as common as the Cal T17 and I like the designs of these watches very much!
Concerning the purchases through Omega museum: I knew this as I monitored Marco Richon“s purchases on ebay - I got to know his ebay ID by accident...
Omega museum states on their website that they DO NOT buy back watches, but they do by sure...
kind regards
erich
Here is one of mine with movable lugs - rare early model...

and now a "real" wrist-shot

Have a close look on the hands! Nice details there...
enjoy
erich
Hi Art,
This was created before they introduced the T17 movement.
Before the rectangular movements the cal. 23.7 was frequently used for rectangular watches...
here it is

there were several iterations of this cal. - here is an adjusted example as you can read.
kind regards
erich

Nevertheless pleasurable on the wrist.
One in round movement.
One


In rect movement.


HAGWE
Ed









I wish i'd had this forum to share it with at the time Art, i may not have sold them all.
Such is life
G




I had one Art, but i sold it for three reasons.
The first you already know,
The second was that it is pretty big and bulky on the wrist and thirdly, because it was a quartz movement. At the time i was pretty much of the belief that quartz movements were irreparable.
I now know that is not correct and not all quartz watches are the same. Having said that, the beta 21 calibre was made in relatively small numbers so they may be hard to get parts for so you could end up with a very expensive watch case and no working movement.
Very nice looking watches and very typical of the 70's designs.
G