The second-highest estimate (CHF 1,200,000 – 2,400,000) goes to a lovely example of pink-on-pink 1518. It shouldn’t break any records compared to the $9.7 million price achieved by the pink-on-pink watch belonging to Prince Mohammed Tewfik A. “T.A.” Toussoun of Egypt. That was considered one of the best to ever come to market, while the case here is softer, and the dial has some marks, scratches, and gouges.
That said, there are only about 15 pink-on-pink 1518 known, so any on the market will fetch a high price. A yellow gold 1518 rounds out the trio, with a case that has nice hallmarks and a dial restored by Patek Philippe (which has triggered some discussion among dealers and collectors), which overall lacks a bit of punch but should go higher than the CHF 200,000 to 400,000 (which, at the low end, would be the weakest for a 1518 in 7 years).