Brand comparisons usually run on opinion. This one runs on settled transactions: 187 recorded sales of Girard-Perregaux and 81 of Grand Seiko, all in US dollars so the figures are directly comparable.
What each one actually costs
The median Girard-Perregaux result is $6,144. The median Grand Seiko result is $4,620. On typical examples, Girard-Perregaux carries roughly 1.3 times the price of Grand Seiko at auction.
Half of all Girard-Perregaux sales land between $3,125 and $14,375. For Grand Seiko the middle half runs $3,355 to $8,456.
Which one surprises the specialists
42% of Girard-Perregaux lots beat their high estimate, against 27% for Grand Seiko. That gap says the trade is more often caught out by Girard-Perregaux, which is a sign of demand outrunning the published guide.
Breadth of the record
Our archive covers 84 distinct Girard-Perregaux references and 63 for Grand Seiko, with results going back to 2004 and 2012 respectively. The top recorded result is $193,350 for Girard-Perregaux and $78,740 for Grand Seiko.
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.
