Among Paul Newman of 6263, there is a rare thing that the minute circle part of the circumference gets browned by secular change. The individual introduced in the PUCCI book is a round Mk2 panda around 2.8 with a peripheral browning.

The image of only the dial looks like this. At the same time the outer circumference is browned, the luminous point has also turned black. Whether browning is caused by sunburn is at some point of opinion, but it is quite convincing that the luminus is dark at the same time as the browning of the perimeter.

Several books have been exhibited at auctions in recent years. The first is the outer brown of the MK1 dial, exhibited at Geneva in 2016, and the serial is 2.200.241. The nightlight was dark like the previous one. Because the base is Mk1, this was certainly a valuable one.

Ref. 6263 Mk1 panda 'tropical' outer minute track,1969
SOLD FOR: CHF 929,000

The second one is Hong Kong in 2016, and the outer brown of Mk2 panda. The cereal is 2.653.869. This individual had a little weakening of the browning of the periphery a little, and the light was very beautiful.

Ref. 6263Mk2 Panda 'tropical' outer minute track,1971

SOLD FOR 614,520 CHF