Obscure 1991 hand held game machine - The J.Cock Z400S

Thought you'd seen every 1990s hand held colour video game machine? Enter the J.Cock.
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If you know your historical gambling devices, you’ll have heard of a Trade Stimulator - if you're unfamiliar, these were small counter-top games of chance where you could win things such as bubble gum and cigarettes. These would commonly have been found in general stores in the US in the early 20th century. Whilst the machines presented a front of innocence to authorities, they were often used as a means to circumvent anti-gambling laws. By using the bubble gum payouts as tokens, your customers could gamble real money, with any winnings being paid by exchanging the ‘prizes’ with cash from the store’s till.
The reason I mention these is that this is effectively what I have to show you today. But this one dates from the early 1990s and comes from Japan - a country with its own perculiar gambling regulations… as demonstrated in my previous video about pachinko.    • Star Wars Pachinko -  how it works  

00:00 Start
01:53 In the box
03:38 Problems
05:46 It’s alive
06:12 Playing the game
11:09 DIP switches
12:16 Specs
12:43 Inside the case
14:15 More than meets the eye
15:32 Mat’s Karaoke bar & illegal gambling den
16:52 Oh yes it is..
19:13 Merch plug
19:27 Patreon credits

FAQs

Q) But surely gambling like this would be illegal?
A) Yes, that’s why I included the information above about illegal gambling in the US during the time of prohibition. Companies in the US made Trade Stimulators at a time when gambling was illegal knowing full well they were making devices that were being used for gambling - but it’s the act of gambling not the device that was illegal. You can bet on almost anything if you want, the colour of the next car coming round the corner..they can't ban everything. Poker is played with playing cards, but playing cards are still legal in Japan…ask Nintendo.

Q) Is there an anti tamper feature?
A) It appears so, there is a mention of this in the instructions.

UPDATE/CORRECTION
1) It appears turning the key to add credits is a standard feature - not a modification.
2) The two pins below the lock on the right hand side will clear out the credits when bridged - e.g. with the key.
Therefore there is no need to open the machine up in normal usage - the bartender (etc) only needs the credit key.
There's a lot of talk about lock-picking, it appears a common location for a machine like this was on a bar, a place where the usage would be monitored by a bartender.

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