Porsche Design's first venture into watchmaking, launched in 1972 in collaboration with Orfina, was a deliberate exercise in industrial design philosophy applied to the wrist. Ferdinand Alexander Porsche, the man behind the 911's silhouette, brought the same principles that defined his automotive work: monochrome surfaces, maximum legibility, and a refusal of decoration for its own sake. The result looked like nothing else on the market, and largely still doesn't.

Reference 7156 distils this approach into a day-date automatic. The all-black dial is pure information architecture: bold Arabic numerals, a luminous track of dots and batons, and a red sweep seconds hand that provides the only colour accent on an otherwise monochrome face, a detail that became one of the design's signatures. The day-date window at 3 o'clock is integrated without disrupting the overall symmetry. The integrated steel bracelet continues the same visual language, its angular brushed links extending the case's industrial vocabulary right to the clasp.

What makes this example exceptional is its condition: new old stock, meaning it has never been worn. The dial, case, and bracelet all present as they did the day they left the workshop, no fading, no wear, no compromise.

A genuinely rare opportunity to own a piece of design history exactly as it was made.