Announcement chips or markers.
What are announcement chips (jetons)?
Used at the French roulette you could make a called bet and the croupier would place a marker or announcement chip on the called region.
For example, if you want to play number 29 with the splits this would be a 5-chip bet.
Splits are called “chevaux” which means horses. A marker with a horsehead was placed on the 29 and the bet itself was in front of the croupier.
Another possibility was calling a section on the roulette where you wanted the ball to drop.
These neighbors are called “voisins” and the marker was a chip with a big V on it.
So as a croupier sitting at the French roulette you had several bets in front of you from time to time without the “racetrack” you have on an American roulette. Needless to say, that this was like driving a car with a shift stick compared to an automatic.

Jo from Belgium. I'm not in the picture, this is from casino Knokke in 1985.

“In Europe, some casinos allow a $1,000 max wager on a straight-up bet, so a player asking for 32 to the maximum could receive a full complete wager on every possible inside bet that involved 32. This would include a total of 12 wagers: $1000 straight up on 32; $2,000 on the splits of 32/19, 32/31, 32/33, 32/35; $3,000 on 31, 32, and 33 street; $4,000 on four corner bets, $6,000 on two six-line bets. The wager total would then be $40,000. A marker is placed on the full complete to the maximum number, in this case 32, to signify the wager.”