The only difference in the case back is the difference between the decoration of the sole plate where is written "Chronometre Bleu" or "Chronomètre Souverain"
I thought the Observatoire and the Moser Perpetual 1 were going to be my last acquisitions in 2009 but I was wrong... Today, on Christmas eve, I pulled the trigger on the Chronometre Bleu when I found the combination of tantalum and the blue dial too mesm...
These 2 watches are very nice indeed. The only difference in the case back is the difference between the decoration of the sole plate where is written "Chronometre Bleu" or "Chronomètre Souverain" Merry Christmas thanks for sharing Patrickh
Was in the FPJ boutique in NYC just 2 days ago and tried on the Bleu. The dark gray sheen of the tantalum is beautiful, and the weight is very solid. The blue dial gives it a slightly casual look. Love it. A fantastic Xmas gift to yourself! Jon (Z3)