Here is a TAV that has a longer right foot and a shorter left foot than what it should be. As such, it may resemble a Peh Peshutah with an inverted nose. This is why our Hakhamim always impress us to make the right foot a bit shorter than the left.
The above letter must be shown to a Tinok, and the right foot shortened if read like a TAV. If the child reads it like a PEH PESHUTA, then its PESSULA.
As per the KHAF, it looks like a cursive BET. I believe that there is room to be lenient and not invalidate it right off the bat, as the letter appears more like a KHAF in the original smaller Ketav.
Your input is however requested. Should it be shown to a Tinok, and fixed if read properly; or do we say that it has lost its shape and de-facto invalidate it? I'd very much appreciate your response.