The one at the bottom is a little hard to define, it combines elements of several different styles of knife from different regions and time periods. The blade is 1075, steel fittings and walnut grip, 14 -1/4" overall..
In the middle is a very plain rondel dagger, 5160 blade, steel fittings and a turned cocobolo grip, 15-3/4" overall. My maker's stamp wasn't struck deep enough on this blade and just began to disappear in the final grinding so I gave it a less refined finish.
At the top is a dagger which is loosely based on an original in the Wallace Collection, shown on p. 150 of "Arms & Armor of the Medieval Knight", described as a Swiss or German quillon dagger, c1530. The blade is 5160, steel fittings and Madagascar rosewood grip,19" overall. This one is still unpolished and lacks the permanent assembly. The pommel is problematic to get a good polish on and I may leave the fittings with a filed finish or antique them.
The blades are hand-forged, given a simple oil-quench heat treat and oven-temepered. I apologize for the picture quality, the blade at the top appears to be recurved in the pic but it's actually pretty straight...

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