The first experiment made in 1975 by the transformation of a watch of the 3448 reference was not acceptable: the position of the indicator was incompatible with another complication of the model.
The success comes in 1981 with the transformation of another 3448. This white gold watch was sold for CHF 1,62M including premium by Christie's on May 13, 2013 over a lower estimate of CHF 800K. After their achievement, Patek Philippe decided to release this improved version to which they attributed the reference 3450.
Only two 3450 are known in white gold. One of them made in 1985 is estimated in excess of HK $ 8M for sale by Phillips in Hong Kong on December 1, lot 305. It is in excellent condition.
SOLD for HK$ 12M including premium