Alguien puede echarme una mano?

Por cierto estas son las picas de otras naciones que encontré.
From the Landeszeughaus Graz (Austrian/Styrian 16th Century)
(FYI, the dimensions were derived from comparing known dimensions to unspecified dimensions)
From the Luzern Zeughaus (Swiss 15th-16th century)
...or more correctly, from a guy selling them who bought them from the Zueghaus)
Dutch 16th Century

German 16th and 17th Century

Irish 18th Century

Este es el link de donde he sacado las imágenes.
http://www.myarmoury.com/talk/viewtopic.php?t=24930