Jupiter F100 1968 - France

Hello All
Difficult question!
Would anyone know what text is written on the small glass indicator next to the coin slot on a 1968 Jupiter F100.
Trying to restore it back to original in French.

The spec says 1 play is 5 centimes, 2 plays 10 centimes and 4 plays 20 centimes so I am guessing:

1 Disque 5c
2 Disques 10c
4 Disques 20c

Anyone know any better?

Thanks