old european lance

[fernando]

Let me show you this other piece i bought, which i know nearly nothing about.The seller is a generalist, he knows even much less than me about old weapons.The most curious part, as new to me, is the technique apllied in the blade making. In both sides, the right half is covered by a second steel layer, roughly hand welded to the basic part. Such reinforcements, wider at the tip periphery, also cover the blade neck. It could be that the blade form started as a three part folder, with a consequent turning in and hand welding the half parts to the basis. Certain trimming would then be needed to adjust the folding excesses to the basic blade and neck shape, unless the starting three part piece was already pre-shaped.
Is there any logic in this, or do the pictures look otherwise to experts ?
Could anyone know or guess the aproximate age of this arm ?
I would be much obliged for your help.