Perpetual Calendar Retrograde Date, 270th Anniversary 'Openface', Platinum Kind of Blue While written decades ago

While written decades ago

3mm thin 1815 limited edition made to celebrate 175 years of since FA Lange founded the brand in 175 examples

General consensus holds that around 100 examples of these were made

It is a time machine which aspires to transport the wearers mind elsewhere

here paired with Lange’s proprietary Honeygold case material that is reserved for the most exclusive offerings

Perpetual Calendar Retrograde Date, 270th Anniversary 'Openface', Platinum Kind of Blue While written decades agoA Perpetual Calendar Retrograde Date, made for Vacheron Constantin's 270th Anniversary in 370 examples. The models made for this anniversary introduced an 'Openface' concept, with partially opened dial apertures allowing mechanics to be observed in small sections. The dial is comprised of 18k gold featuring a hand guilloch Maltese cross motif, mixed with opened sapphire discs. This perpetual calendar blends Vacheron Constantin's storied history of