Unidentified privy mark (Western African States • CFA franc) [επιλυμένο]

Unfortunately I cannot identify privy mark on the obverse 50 francs CFA coin. It looks like a pentagon and is located on the right side of the coin's obverse next to the letter "T"...

https://en.numista.com/catalogue/pieces1798.html
https://en.numista.com/catalogue/pieces53891.html
https://en.numista.com/catalogue/pieces119931.html

P.S. And a small additional question: maybe someone knows what kind of plant is depicted on the reverse of the same coin - vertically to the left of "50" (above the cornucopia)? I was only able to identify cocoa beans, coffee branch, peanuts and ears of rice.

The privy marks are on the Reverse. That is likely a designer or engraver mark. It does look like the Pentagon privy mark used from 2011 so it could be the symbol of Yves Sampo.

I also considered this idea. But I don't have confirmation yet. Moreover, it is very strange for me that I could not find accurate information anywhere on the Internet, although the number of these coins is hundreds of millions...

The privy mark is stylised « A.G.M.M. » (Atelier de Gravure des Monnaies et Médailles)


And for additional question it’s millet

@Polette - Thank you very much!
If you would be so kind to answer another question: why is this mark "AGMM" not present on all the coins of the Paris Mint?
About additional question: unfortunately I can not agree that it is millet. The plant I'm interested in doesn't look like millet at all...

Απόσπασμα: "Karavadgoo"​About additional question: unfortunately I can not agree that it is millet. The plant I'm interested in doesn't look like millet at all...

Hello,
​I just switch with the french page:

and when we zoom in on the mil/millet/fonio photos we can see that it looks like it:

other informations:
https://www.bceao.int/fr/content/pieces-en-circulation (french)

Απόσπασμα: "Karavadgoo"​@Polette - Thank you very much!
​If you would be so kind to answer another question: why is this mark "AGMM" not present on all the coins of the Paris Mint?

​And here informations about AGMM (french page) by Jean-Luc Maréchal:
https://10francsgenie.fr/gravure/monnaies-signees-ou-pas/
(AdG = Agmm)
Google trad:
« in general, the State ordered its engravings from a medal artist, sometimes the General Engraver of the Coins, who signed his creation and was paid for it. In a not very old time, let's say the first half of the 20th century. the Engraving Workshop of the Mint was mainly responsible for carrying out very technical work: customs stamps, State guarantees, dry and wet stamps, etc., and of course, the reproduction of monetary tools by statement of punches and sinkings. Engraving at the Atelier developed under the direction of Raymond Joly, and some engravers took up medals as well as coins at this time.

It is very interesting! Thank you!