Brand comparisons usually run on opinion. This one runs on settled transactions: 426 recorded sales of Franck Muller and 189 of Zenith, all in US dollars so the figures are directly comparable.
What each one actually costs
The median Franck Muller result is $6,875. The median Zenith result is $4,620. On typical examples, Franck Muller carries roughly 1.5 times the price of Zenith at auction.
Half of all Franck Muller sales land between $4,825 and $10,560. For Zenith the middle half runs $2,550 to $9,900.
Which one surprises the specialists
50% of Franck Muller lots beat their high estimate, against 27% for Zenith. That gap says the trade is more often caught out by Franck Muller, which is a sign of demand outrunning the published guide.
Breadth of the record
Our archive covers 82 distinct Franck Muller references and 63 for Zenith, with results going back to 2001 and 2004 respectively. The top recorded result is $164,500 for Franck Muller and $2,096,000 for Zenith.
What this does not tell you
A median is not a verdict. These brands overlap heavily at the edges, and a well chosen example of the cheaper one will outrun a poor example of the dearer one. Condition, completeness and model matter more than the badge on the dial.