| Type | Title | Year | Publisher |
|---|---|---|---|
| Slot Machine (mechanical) | 🟩 Automatic Counter Vendor | 1923 | Cooper Mfg. Co. [San Francisco, CA, USA] |
| Slot Machine (mechanical) | 🟩 Automatic Counter Vendor Improved model | 1924 | Cooper Mfg. Co. [San Francisco, CA, USA] |
| Slot Machine (mechanical) | 🟩 Counter Vender Curved Front | 1925 | Cooper Mfg. Co. [San Francisco, CA, USA] |
| Slot Machine (mechanical) | 🟩 Operators Bell | 1924 | Cooper Mfg. Co. [San Francisco, CA, USA] |