====== Calatrava Cross ======
The **Calatrava Cross** is regarded as trademark of the watches made by [[Patek Philippe]], each of which has it mapped to the crown. The [[1932]] presented model [[Patek Philippe Calatrava|Calatrava]] was named after an order of knights founded by the abbot Raimondo in the city of Calatrava in 1158.

===== Literature =====
  *[[Das große Uhrenlexikon]]; Author [[Fritz von Osterhausen]]; ISBN 3898804305
  *[[Patek Philippe, Geneve]]; Authors [[Martin Huber]], [[Alan Banbery]]; ISBN 3906500012
  *Patek Philippe. Komplizierte Armbanduhren; Authors Giampiero Negretti, Paolo DeVecchi; ISBN 382901449X


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