Orient ChronoAce King Diver Depth gauge Ref.CB.429-16240 This is the world's first watch equipped with a depth gauge that uses the Bourdon… | Instagram
Orient ChronoAce 27 jewels Mexican Opal or Mother of Pearl Dial (early 70s) : r/JapaneseWatches
And a green dial Orient ChronoAce 27 Jewels. Which colour you prefer? :) : r/JapaneseWatches