Coins with unknown stamps on them [επιλυμένο]

I am trying to figure out what the stamps are on these coins. I am fairly certain the identification is accurate.

The 20 Para has one stamp that looks like “PM”

The 40 Para has 2 stamps, one on each side. One has characters I can't identify,  possibly a “K”. The other side is also unidentifiable, one is an “X”?

40 Para N#10137

20 Para N#20387

Any information is appreciated.

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

Seems there are a lot of ottoman coins with counterstamps, some greek

with “PM”

https://www.zeno.ru/showphoto.php?photo=262106

with the “x”
https://www.zeno.ru/showphoto.php?photo=44451

You might take a look in the whole category:

https://www.zeno.ru/showgallery.php?cat=1512

Thank you so much, I have been searching with no luck for a while now.