I'm pleased I could make a contribution to your thread Kubur. As an aside, do you think the pierced blade on mine and the third example you posted might be related to the similar piercings on some of the Albacete Spanish knives of the 19th C? Note the example third from the right in this selection posted by Carlos in 2012.
Ian
Carlos' picture is here:
http://www.vikingsword.com/vb/attach...id=95781&stc=1