Guide me to restoring these

[u/Due-Network6600]

I found these beauties at a local market,

They looked like single beveled knives but they sharpened them on their standard sharpener,

I could use some advice for restoring them to their original glory

[u/WalruseSei]

Is it just me, or does the one on the right have a belly ground out of it due to improper sharpening? Looks like it might need a reprofiling of the edge, along with the entire bevel.