quattro[Moderator]
20676
Patek Philippe ref. 3579
The Patek Philippe ref. 3579 is rarely seen.
Rumours suggest that it was exclusively produced for the Japanese market, with only 200 pieces having left the manufacture over the years, though this hasn't been officially confirmed.
The steel case measures 33 x 38 mm and the watch is powered by manual winding caliber 23-300.
Best, Emmanuel
A/ Blue dial with markers

credit: @artbsnr (1-2), @misterenthusiast (3-4) & @sabiwatches (5-6)
B/ Blue dial with Roman numerals

credit: bulang & sons
C/ Silver dial with markers

credit: arbitro