Carrefour TNR Token [решено]

⌀ 23 mm

What's purpose use of the token?

Locker?
Shopping cart?
Vending machine?

Thanks

This token seems to get the size and shape of a current dirham and geometric patterns look like former Mazunas of Abd al-Aziz rule.
The TNR network in Casa is close to the Carrefour Sidi Mâarouf hypermarket at the rail station "Facultés" (18 minutes by foot, but still a bit long to go to the store ...)
It might rather be linked to Rabat, where the Carrefour Market Carrefour Market - Shem's is next to the TNR station Rabat-Agdal (7 min by foot)

So may be a free transfer bus token or a shopping cart token