Dear IWC Forum Members,
I have a question regarding the tritium Der Fliegerchronographs (ref IW3706). Some T SWISS T dials have lume plots on each 5 sec mark (5, 10, 15, 20, etc.) whereas others do not. Did the "lume plot" 3706s pre-date those without lume plots or did IWC make both versions before transitioning to the luminova? I have seen both examples--tritium dials with and without lume plots--with production dates said to have been from the 90s as well as those from the 2000s, making it difficult to discern if one type came before the other.
Thank you for taking the time to read my question--I look forward to your resposne!
John