From the Archive AHM's Century 424.

The article provides information on the HO-Scale Alco Century 424 released by Associated Hobby Manufacturer (AHM) in 1975, which has been the first Roco-made HO-scale diesel by AHM. It discusses the design and features of AHM's C-424, which include a multi-part shell with cab, nose and long hood placed on a frame with pilots, handrailing, and battery box. It mentions other models released by AHM based on C-424 which include a single-truck powered C-424.