Amusement Machines: 1915 (type: Slot Machine)
| Name | Manufacturer | Year | Type | Genre | Description | Images |
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| Counter O.K. | Mills Novelty Co. | 1915 | Slot Machine / Bell |
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| Floor O.K. | Mills Novelty Co. | 1915 | Slot Machine / Bell |
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| Operator Bell | Mills Novelty Co. | 1915 | Slot Machine / Bell |
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| Pierrot | Unknown | 1915 | Slot Machine / Wall game |
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| Premium Trader | Mills Novelty Co. | 1915 | Slot Machine / Reel |
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