Bill, those are Japanese "Pachislo" machines, used on the Ginza in Japan. Japanese law requires that they be retired after a few years of use, so they sell them to the US.
The link you posted brings you to VERY OLD models. And, as you learned earlier they are not true slots, but rather "skill stop" machines. You must stop the reels by pressing buttons. The bonus round is fun and they are easily converted to accept quarters...BUT you will get bored in a few months.
I can put you in touch with someone in upstate NY who deals in newer Jap models & offers a lifetime guarantee.
Other options: NY is a 30 yr state...not sure about your side of the river, but last I checked, the PRNJ still had an antique (pre 1941) requirement; don't know if that's changed. The old mechanicals are great but it's like buying an old car (like the #'s may not match, re-cast parts used, etc).
****if you like real IGTs, email me privately; I have further info
Hope this was of some help.
MP