This guide provides current market values for American Flyer S gauge trains and accessories. It covers items manufactured by A.C. Gilbert and Lionel, as well as ready-to-run S gauge trains from contemporary manufacturers like American Models and S-Helper Service. The pocket-sized format makes it convenient for collectors to use in the field. The guide aims to offer accurate pricing information for enthusiasts and collectors.

This guide is presented as an essential resource for collectors of American Flyer S gauge trains. Its focus on accurate, current market values suggests it is intended for hobbyists actively engaged in buying, selling, or appraising these collectible items. The inclusion of both vintage and contemporary manufacturers indicates a comprehensive approach to covering the S gauge market. The pocket-sized format implies a practical, on-the-go reference for enthusiasts.