15th century dagger with later blade

[Villerica]

Hello !
I am looking for information on this dagger handle in wood . I think that it is 15th century and possibly in boxwood. As you can see , the wood has been sculpted with many symbols including Venus and a man and woman. There is also a musical theme with musicians (playing a lute and vielle) and a lady playing a portable organ. The shield and helm maybe that of the Hapsburgs.
The pommel is an eagle . there is also a lion behind the lady playing the organ and these too could possibly point to the Hapsburgs. The blade has been replaced at a later period and could be oriental or the tip of an 18th or 19th century saber.
It is possible that the dagger was not for military use in view of the pommel and the symbols of love.
What are your thoughts and observations on what appears to be a rare object.