The sign is actually the HO/O scale window sign and designed with a set of photo etched supports so it can be used as roof top billboard for N & Z scales

This is Rix 5418001 N Scale Yard Office Kit

Model Number: 2137

Trainz Product Id: 12300369

Model Number: 5774

Atlas 10002148 HO Undecorated ALCO RS-11 Diesel Locomotive - LokSound & DCC DwDetails-4.45-1.00-14.00-10.00-6.00-2 The sign is actually theThis is an Atlas 10002148 HO Scale Undecorated Alco RS 11 Diesel with Brakes, LokSound & DCC. It Features: DCC Sound version available with LokSound decoder. Golden white LEDs. Realistic diecast mainframe. Five pole skewed armature motor with dual flywheels for optimum performance at all speeds. Directional lighting. Factory equipped with AccuMate knuckle couplers. Separately applied wire grab irons. MU hoses and coupler cut bars. Two painted crew