Roberts Novelty Multi-Denomination ?Jack Pot? Trade Stimulator. Ithaca, NY: Roberts Novelty Co., ca. 1929. Countertop trade stimulator with three separate jackpot areas with separate paysheets for different prizes and separate windows, and with spinner on a printed paysheet with coin placement areas. Prizes are awarded in accordance with the final resting place of the spinner tip. Painted aluminum cabinet. 7 ? x 16 x 1 ??. Some wear, soiling, several screws are missing (some are in the jackpot areas). Housed in wooden cigar box (possibly done to evade law enforcement). Very good. A rare machine - the only example we could find during our research.