You are here:

Collectibles-General (Antiques)/mills 1947 hi top slot machine


QUESTION: my machine has a 2 inch by 2 inch piece of leather that covers the nickel slot. It is hinged on with 2 screws to the case. Any idea what it is for.
My best guess is a casino put them on to cover the slot when the machine was out of order. Also would it affect the value?
Thank you

ANSWER: Hi Steve,
I have never seen this leather type of coin hole cover but I have seen many different types of coin hole covers all used to save a machine when you needed to leave it for a second or if it was broken. No I don't think this will make a notable difference in the machines value. Nice looking high top you have there.

Thank You
Rodger Knutson

---------- FOLLOW-UP ----------

slot cover
slot cover  
I am sending you a picture of the cover, just because I meant to send that one before.
I was also wondering about the jackpot, can you give me a little bit of an idea on how that works?
I have probably made 400 pulls since I've had the machine and only 1 nickel is visible
through the glass. How does that get filled?
Thanks again for your time,

Hi Steve,
I had a couple of pages from a book that showed how slots work but can't find them right now. As the coins come into the machine they go across the coin escalator and into the coin tube, once the tube is full the excess coins get kicked to a shoot and on to the jackpot filling up the reserve jackpot and then the main jackpot and rain on down into the cash box. On some of the high tops the jackpots can be removed and a win card placed there instead. Also some may have a dummy jackpot in place, still others that were used in Nevada have a hand load jackpot and you will have a key lock in front if you have one of those. There are coin slides under the coin tube and if you say win the smallest win, one slide will pull back (the bottom one) and drop your two or three coins into the payout cup. If you hit the jackpot, the three bars, all the coin slides will pull back dumping all 20 coins from all the slides into the pay cup and this will also trigger an arm that rides on the very top coin slide to trip the jackpot and then what coins are in there will also be paid out, (dumped out) all at once.
Does this help a little? Have a look inside you machine and make sure you have a jackpot, it is a mechanical marvil so you will not miss it in there, if it is there. Or pull your mechenism out and take a photo of it and fell free to send it to me at:
Rodger Knutson

Steve, thanks for the great feed back! This is what a hand load machine would look like, see the lock in front? This is required by nevada gaming as they needed to know just how much was in the jackpot, so you had to load these jackpots by hand by pulling that lock out and dumping the coins in the lock hole:

Here is what your jackpot would or should look like:

Rodger KNutson

Collectibles-General (Antiques)

All Answers

Answers by Expert:

Ask Experts


Rodger Knutson


I am an expert on old coin operated machines, slot machines, trade stimulator's, jukeboxes, old arcade machines, etc. I have been identifying these for people who respond to my web site listed below, for a few years now. In almost all cases I am able to tell them about their old coin operated machines, the year, the value, and other general information about their machines. I do not know much about soda vending machines, coin banks, or scales, but I will try to help you with these if I can. Please email photo's to: My web site is at:


I bought my first slot machine, a .50 Cent Mills Black Cherry in 1969 and have been hooked from that time, I still have that Slot machine! Before that I found a open barrel full of old scraped jukebox wall boxes behind a restaurant, I wanted them all but never took a one of them. Anything that took a coin drove me nuts!

C.O.C.A. and other slot and coin operated machine groups, associations, groups, and clubs.

Many, the Coinslot magazine, always juken, Coin Slot Journal, Slot Box Collector, and others that I don’t remember at this time.

Graduated from Ballard High School in 1969, went to Edison Technical Collage for a couple of years taking welding and metal fabrication, tig, mig, heliarc, also arc and gas welding and fabrication. Then Apprenticed under a slot machine technician who worked in the slot machine industry Reno Nevada, and set up bar poker progressive machines in the casino's, and repaired machine and did the repairs on slot machine circuit boards there. He also was involved in the 2 hand dealer's market and bought and sold machines at the casinos auctions for the secondary market, which includes selling used machine overseas. I learned a ton from this man; he always had the correct answers and took the time to teach me the business. My interest and knowledge in other and older coin operated machine is for the most part, self-taught. It's been my passion from back in 1968 and before, my thirst for knowledge about these machines has kept me more interested over the years, and keeps me searching for more information even today. I have meet and talked to book authors on these machines, attended hundreds of coin operated shows and auctions, and I stay with that to this very day.

Awards and Honors
Take a look at my allexperts rating, and my guest book, links to these are at Also you can check my 100 percent rating on ebay, as I have been there with ebay from their day one, I am user coinslots at ebay. My other awards come from the very people that I deal with, I always make them happy, no matter what it takes, but they always are happy anyway as the countless thank you letters testify to me, so I know I am doing right, and the best I can. I have found so many hard to find parts for people, I hunt them down and don't stop until I find what is needed to get that customers machine running again and back to life, that is my main goal.

Past/Present Clients
Client privacy prevents this answer, as some are VIP and famous and I will not betray the trust.

©2017 All rights reserved.