If you're a collector of vintage slot machines or you've just inherited a classic Mills unit, you know that finding and using the right key is the first step to bringing a piece of gambling history back to life. These antique slots, often called "one-armed bandits," used a specific key system to access the cash box and adjust internal mechanisms. For modern US players, it's a fascinating look at the physical security that preceded today's digital casino encryption. Let's unlock the details.
Finding the Right Key for Your Mills Slot
Mills Novelty Company produced machines like the Black Cherry, War Eagle, and High Top from the 1910s through the 1950s. They didn't use a universal key. Instead, keys were often stamped with a number, like M1, M2, M3, or higher. The most common key you'll find today is the Mills 5-Pin Tumbler Key. This key fits the central cash door lock on many popular models. If you're hunting for a replacement, you'll need to identify your machine's model and, ideally, the lock number. Specialty suppliers and online auction sites are the primary sources, with keys typically costing between $15 and $50 depending on rarity.
Using the Key for Access and Payout Adjustment
Beyond just opening the cash box, the key served a crucial operational function. On many Mills slots, inserting and turning the key in a separate lock on the side of the machine would allow you to adjust the payout mechanism. This let the operator set the machine's 'hold' percentage—a primitive form of the RTP (Return to Player) settings managed by software in modern online casinos like BetMGM or DraftKings. Turning the key would physically alter the configuration of the award discs inside.
From Physical Keys to Digital Security
Contrast the heavy metal key of a Mills slot with today's security. When you play at Caesars Palace Online Casino or FanDuel Casino, your deposits and withdrawals are protected by SSL encryption and two-factor authentication, not a physical lock. Payment methods like Visa, Mastercard, and PayPal have their own digital keys. The evolution is stark: the Mills key controlled access for the operator, while today's digital "keys" are designed to protect the player's identity and funds. It underscores how far the industry has come in securing the gaming experience.
Collecting and Restoring Antique Slots
For collectors, having the correct original key adds significant value and authenticity to a Mills machine. A complete, functioning lock and key set can increase a machine's value by hundreds of dollars. Before purchasing a key, verify the lock type. Some later models or refurbished units may have replacement locks that require a different key blank. Remember, these machines are historical artifacts; they are not legal for real-money gambling in most US states outside of controlled, licensed environments.
FAQ
What is the most common Mills slot machine key?
The Mills 5-pin tumbler key (often called a “plug style” key) is the most common type. It fits the main cash door on a wide range of models from the 1930s and 1940s. Look for a key stamped with a number like M1 or M2.
Can I make a copy of a Mills key at my local hardware store?
Almost certainly not. These are specialized, antique key blanks with unique tumblers. A standard hardware store won't have the blank or the code. You'll need to go to a locksmith specializing in antiques or purchase a replacement from a vintage slot machine parts dealer.
Are old Mills slot machines legal to own?
Yes, in most US states, it is legal to own an antique slot machine as a collectible if it is a certain age (often 25+ years old). However, laws vary by state. You cannot legally operate it for real-money gambling outside of a licensed jurisdiction. Always check your state and local laws.
Where's the best place to buy a replacement key?
Online marketplaces like eBay often have sellers specializing in casino antiques. Dedicated websites for slot machine restoration parts are also excellent sources. Be prepared to provide your machine's model name and, if possible, a clear photo of the lock.