Congrats Tibi,
Nice catch!
Even if I don't know exactly when the rare Citizen D080 have appeared (early-mid-late 80's ??? - because it has not a regular SN on the case back), I surely know that it is a quite rare SLIM/Solar watch!
I am really curious: Can You tell me/us the approx. date when it appeared on the market?
Just for fun, I will mention that I have acquired in the last months a rare 1977 Mirexal Solar - identical with Mondaine 'Digi-Solar', with a Swiss made Brown Boveri LCD 8 digits display(!) , as one may read on the URL below...and with one of the first solar cells solution made in Europe and abroad :)).
http://soluhr.com/mondaine.htm
When I will have some time, maybe I will make a review of the Modaine Solar also, just to present such rare digital Solar watches as Yours and mine - and their (hi)story to this forum's members...
Of course, my (hi)stories are not a match to Yours or the Caruso''s excellent video reviews on Youtube, but I really hope that my reviews may be still useful to some users of this nice forum...
Thanks for Your post and Your very nice Youtube reviews.
Best Regards,