Where did the BAR on slot machines come from?

BAR - Animation of classic slot symbol slot machine bar symbol Gambling Slot Machine Symbols slot dinopolis The cherry and bar symbols became traditional as slot machines reel symbols dating back to

slotฝาก20รับ100 What Is the BAR Symbol in Slots? · Classic BARs are black and white · Some slots use colored BAR symbols, such as blue, red, and purple BARs,