Their floor standing spinning disc machines were state of the art around the turn of the century. Although considered one of the early 'big 3' slot producers (Caille,Mills & Watling) they may actually have led the way in the very early days. The Caille Brothers, Arthur and Adolph, had been dabbling in coin-operated machines before 1895 under other company names but didn't form the Caille Bros Co until that date. The Rye Heritage Ctr Collection of Working Models.