Markings on Yataghan blades

[mariusgmioc]

Hello,

A friend is curious about the markings on yataghan blades.

In the photos, is a yataghan blade with presumably the marking of the 42nd Orta (regiment) of Janissaries.

1. Does anybody have other examples (not necessarily blades; reference to a book) with the emblem of the 42nd Orta?
2. Does anybody know of other examples of weapons bearing the Orta emblem?

Regards,

Marius