One day after objects became available, objects have been gained and lost, claims backed and bluffs called. The main objects (Roulettes, blackjacks and slotmachines) have been divided as following;

Akincilar Clan:
Baltimore Blackjack

Anadolu:
Corleone Roulette

Conflict:
Baltimore Roulette

Conquista:
Palermo Slotmachine
Las Vegas Meadows Slotmachine
Corleone Slotmachine

Crescendo:
Las Vegas Apache Roulette

Cristeria:
Las Vegas El Rancho Slotmachine

Favians:
Detroit Roulette
Las Vegas El Rancho Roulette

Gambino:
Palermo Blackjack

Gravano:
Las Vegas El Rancho Blackjack

Kerberos:
Corleone Blackjack

Krays:
Las Vegas Pair-O-Dice Slotmachine

Lan:
Philadelphia Roulette
Las Vegas Apache Blackjack
Philadelphia Slotmachine

Marazzino:
New York Roulette

Natarelli:
Chicago Roulette (shared with Anadolu)
Las Vegas Meadows Blackjack

Orion:
Las Vegas Apache Slotmachine

Sindikat:
Detroit Slotmachine
New York Slotmachine

Trafficante:
Las Vegas Sal Sagev Slotmachine

Quantum:
Las Vegas Meadows Roulette
Las Vegas Pair-O-Dice Roulette
Las Vegas Sal Sagev Blackjack
Philadelphia Blackjack

Vaffanculo:
Chicago Slot Machine

Vincitori:
Chicago Blackjack (shared with Untouchables)
Palermo Roulette

Uncensored:
New York Blackjack
Detroit Blackjack

Unknown:
Las Vegas Sal Sagev Roulette
Las Vegas Pair-O-Dice Blackjack
Baltimore Slotmachine

Thanks to Barcelona for submitting the list!