An interesting 'discovery'...
The letters alef and lamed can form a ligature. That said, a combination of two characters - alef & lamed. What about one character..... an upside-down.... final pe?
See this old siddur:
> ayin vav ligature...
I'm not sure if this was intentional.
Yes, we know about that; saw that before.
I'm talking about an upside-down final pe; and the final pe is the ligature!
the final pe is the ligature!
To complete your proof, you still need to show us a final pe from the same old siddur.