Question

What's is predecessor of 5,270 ?​

Answer 1

Inner Value: The Movement

Its predecessor, the calibre 27-70, was based on a Lemania movement. The 29-535 combines six patented chronograph innovations, and it is a pity that the sight of a 5270 is and will remain very rare.

Answer 2

5269

predecessor mean -1

so, 5270-1 = 5269