Up for auction is a captivating collection of two S-gauge model train accessories from the renowned A. C. Gilbert Company. This set features the No. 566 Whistling Billboard, measuring 8 x 4 x 5 inches, showcasing a steam locomotive graphic, alongside the No. 568 Whistling Billboard with Controller, sized at 5 x 5 x 4 1/4 inches, illustrating a Santa Fe diesel graphic. Both items are in good cosmetic condition, displaying minor age-related wear such as light dust and slight discoloration on the paper graphics. The dark green plastic housings are intact without cracks or major scratches. These billboards retain their original boxes, which, while exhibiting evident wear - including soft corners and creasing - still contribute significant collector value. The inclusion of the whistle controller for the No. 568 adds completeness to this desirable pair that represents the transition in American railroads from the steam era to the diesel era. Don’t miss this opportunity to add a piece of history to your collection!