Good evening guys, I'm in love with this beautiful timekeeper, a 1973 Zenith XL-Tronic with Zenith 505 diapason calibre (ESA 9164), one of the high end XL Tronic watches. It looks to be pretty rare and it only shows with the blue dial (please see the original ad attached), and it has always been a very expensive watch. My watch has a bronze dial, which I've never seen, do you know if this watch was available in dial colors other than blue? Please help me if you can. Thank you very much from Italy.