In the series of three re-edition of the Doxa Sub 300(no t) we have here the Professional "Orange" dial which originally came out around 1967 - 1968.
Just a quick pictorial review sitting next to the very limited original Black lung (rumored prototypes +/- a dozen known) and the production model for the European market from around 1967/68.
The re-edition remains faithful in every way with two small but noticeable elements when compared to the original. First the orange color of the disl is brighter but it may just be the originals have aged and second the lume applied to the seconds hand with slight variation on the ominute and hour. Again small variations not distractions but overall a great execution by Doxa.
The bracelet is what it is no comment.
Doxa sub 300 (no t) black lung next to re-edition 50th anniversary.
Doxa sub 300 professional side by side re-edition and original.