DCD-MGS-BR Alpha Mimic Pack of 12 STEAM Era 3-light Ground SignalALPHA MIMIC 12x STEAM Era 3 light Ground Signal A pack of 12 x 3 lamp weathered aspect plug and play signals in 4mm scale (OO), complete with control board and accessories. The DCD MGS BR is the classic 3 lamp ground signal. It was first introduced in the mid 1930s and spread far and wide. Most are still in use today. This makes it a great choice for layouts of many prototypes and periods. The STEAM era version has a slightly yellower White aspect, as