16TH Century stiletto dagger ?

[mariusgmioc]

Originally Posted by cornelistromp

it is not triangular but a blade of Diamond section, both sides have a Long flattened ridge, running in the middle of the blade.
With this type of blades, often , at one side the ridge extends over the ricasso and at the other side the ridge stops before the ricasso, so that the thumb can be placed on a flat surface.

best,

Thank you for the clarification!

Still, quite different from the one in the original posting.

Not that I am very knowledgeable, but I haven't seen that type of blade before.