Collectibles-General (Antiques)/Expert Profile

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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:

Experience in the area

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.

What do you like about this subject?

You find something new and interesting every once in a while, I just love seeing something that is not been seen before.

What do you still hope to achieve/learn in this field?

I want to spark an interest in these items, they're old America! and at its glory.

Something interesting about this subject that others may not know:

Canadian coins stick to a magnet, U.S. coins do not, that is why you see a magniet on U.S. coin acceptors.

Something controversial or provocative about this subject

Slot machines and other coin operated games were taboo for years after the 50's and still are today to some extent, so history doesn't remember much about them.

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Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Rex01/30/17101010Thank you, Rodger, for the quick response .....
Rudolf08/29/16101010Thank you for your effort.
ian08/28/16101010thank you i agree
John07/22/16101010Many thanks Rodger, your assistance has been .....
Alisa06/01/16101010Thank you so much for the info .....

Recent Answers from Rodger Knutson

2017-01-23 seeburg 777 slot machine:

Hi Rex,  It does sound like you have fried one of the voltage taps or sections of your transformer. Problem with metal that is free to move around in a machine, even coins, is that when it lands it can

2017-01-10 jockey club:

Hi Mike,  I have searched my allexperts site and can't find anything where I answered questions on a Jockey Club slot machine, could you get me the date of this past question so I could read it and refresh

2016-11-30 bally 809 zza slot machine:

Hi Mike,    This is one of the most asked questions and one of the hardest to answer. I would say, from a low of $500.00 to a high of around 1,200.00 but average expected selling area would be around 800

2016-09-13 star amusement company:

Hi Rudolf    Well I am still looking for information Rudolf........  Star amusement made several games like:    Sparky  Flip Flop Floozy  Winner Dice   And, Star Trade Register    I just haven't found

2016-08-26 bally slot id:

Hi Ian,  I am afraid you are in some real dark areas here, I don't have the means to help you with this and if it is a machine made for the Holland market were not even going to know what game it had installed


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