The present watch is a re-introduction of the 3970 and was made in a limited number of five pieces celebrating the brands 175th anniversary and unveiled at the “Art of the Watches” Grand Exhibition in London in 2015. In addition to the rose gold example, Patek Philippe also released a platinum example with matching black dial. The watches retain the look and feel of the original iteration because they are produced from new old stock cases and movements. The black dial plays well with the pink gold case. During the release of this limited edition wristwatch, the brand also released similar discontinued models, a white gold 5070 chronograph with pink dial, a platinum 5070 with blue dial, a yellow gold 5070 with black dial and a rose gold example with sunburst brown dial. An edition of the 5970 perpetual calendar chronograph, one white gold model with beige/pink dial and a yellow gold example with black dial. There is a reference 5050 perpetual calendar with retrograde date, as well as four versions of the 5059; rose gold with sunburst brown dial, white gold with salmon pink dial, yellow gold with dark grey or sunburst blue dial. Finally, there was a re-edition of the 3940, one in pink gold with brown dial and a white gold example with yellow dial.

These extraordinary timepieces were offered solely during the London exhibition and rarely if ever come to auction. This is the first time this example has appeared at public auction. In lovely condition and complete, this timepiece makes a unique addition to a collection of complicated Patek Philippe wristwatches.