Just finishing up an interesting all original Jennings Today Vendor Rock-ola revamp. Serial #12800 A few thoughts/discoveries: Adding the circular jackpot necessitated the addition of two formed "sleeves" around the middle two vendor knobs so that they could not be depressed. (No change to the internal vendor mechanism); Brass "key" latch to remove the front door to load mints is opened by a hex key; It had original 80 year old Strike Three mints in the area (for show) above the jackpot; There were two bugs---one on a lemon (1st reel surprise pay?) and the larger, "RP 300", that prevented a jackpot and weighted the reel in the house's favor; It has a hand-made chute to direct the coins to either the jackpot or cashbox. (Also added some tin sheeting to prevent the nickles from overflowing into the vending mechanism); It has 2 Rock-ola decals and it looks like the original inside Jennings paper was scraped off when converting the slot. It has been a fun project!!!