| Slot Machine |  O.K. Jackpot Gum Vender Model 55 | 1920 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | O.K. Operators Bell Eagle | 1923 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Oliver | 1906 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Operators Baby Bell Vender Model 42 | 1915 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Operators Baby Bell Model 43 | 1915 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Operators Bell Model 54 | 1923 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Owl | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Owl Musical model | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Pastime | 1911 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Profit Sharing Gum Vender | 1910 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Puck | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Puck Triplet | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Puck Twin | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Puck Improved model | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Puck Musical model | 1902 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top 5-Pull Front Vender | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top 5-Pull Gold Award Vender | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Baseball-Reel | 1937 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Bird of Paradise | 1936 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Castle Front | 1948 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Cherry Bell Front Vender | 1937 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Cherry Bell | 1937 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Cherry Bell 5-Pull model | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Diamond Bell Front Vender | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Diamond Bell | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Future Play Front Vender | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Future Play | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Hand Loaded Twin Jack Pot | 1939 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Top Improved Cherry Bell | 1938 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Ball Gum Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Front Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Gold Award | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Gold Award Ball Gum Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Gold Award Front Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Gold Award O.K. Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Mint Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor O.K. Vender | 1935 | Watling Mfg. Co. Chicago, IL, USA |
| Slot Machine | Rol-A-Tor Silent Salesman | 1935 | Watling Mfg. Co. Chicago, IL, USA |
