10 Milliemes FAO

Dears, i have this coin
https://en.numista.com/catalogue/pieces1823.html
but with error as it's head is like the tails exactly so the face with the number is not found, only the pic twice, does it worth much?

Show us pictures with an edge photo, please.

i know that this hole might make it worthless, i need to know if this error is common or not, as i couldn't find this error on the internet .

thank

Is that a "4" punched on the reverse?

yes, does that mean anything?

It would worth about $ 50 I guess, but without hole... Unfortunately now, it's just a piece of metal, became such in stupid hands :(  :(

The history (my own version) could be follow:

It is an error struck. Error strucks are quite plenty at Cairo mint, like these:

(image source: seller emlad. ebay)

But, as FAO coinage was funded by FAO, and not by government. They were responsible to control any error struck, to have a proof report. I think they numbered errors like your one counterstamped by number "4" . After showing a proof, probably coins were kept somewhere for years, but then melted or taken by workers.
Mint worker Ahmed took an error coin and gave to his son, Omar. Omar pierced it and hang on neck. sad story...

yours
D

it's sad story thanks for your time and info

Best Regards