...Heuer Solunars are since ages on my radar but they are incredibly rare (even if you include the A&F Versions), and - more importantly - most of them have totally messed up (i.e. "refinished") dials. In the meantime Prices have moved to phantasy-land. In addition I saw one similar to yours (it is actually from Helmut Sinn's private collection) that I was looking at, I guess it is a somewhat later version and the case seems to be chromium plated.... a total no-go!
I have never, ever, seen one as nice as yours.
Cheers, HSTE