St. James the Less
Universitätsbibliothek Salzburg, G 17 I
This is one of the unfortunately numerous images in which the saint's attribute is a bucksaw, which is properly the attribute of St. Simon the Zealot. James's attribute is a fuller's club, which is sometimes represented as a long pole topped by a flat wooden piece similar to the one at the top of this bucksaw (example). It may be that an artist "corrected" such an image of James's attribute by adding a long blade and then was copied by several subsequent artists.
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Source: Wikimedia Commons