.....but you found a slot machine that actual takes and dispenses coins!
There are at least 4 casinos in downtown Las Vegas that still have SOME coin-in/coin-out machines. They are: The Fremont, The Californian, Main Street Station and The El Cortez. (I got my last silver quarter out of a machine at The Californian last year!)
The video poker coin machines have been upgraded from the old CRT displays to more modern flat screen displays. So, it looks like they may be around for a few more years.
The coin machines are still very popular .... when you can find them. I haven't seen a coin machine on the Strip in many years.