The Ref. 7031 featured the black acrylic bezel, whilst the Ref. 7032 featured the brush Steel bezel. Two variations of the ref. 7031 were made in 1971: the version with a grey dial and black registers, and a much rarer version, seen here, with a black dial and grey registers. There also existed the Ref 7033 which featured the bi-rotating acrylic bezel, but this was never made in series or at least never went beyond the prototype stage. It’s particularly wonderful to find a black dial example with the collectible and original bright orange box.
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