The Light Works USA Miller Engineering 88-2701 B & O Baltimore & Oh. Neon Billboard is an unassembled kit that includes a sign for model railroad enthusiasts. Made by Miller Engineering in the United States, this billboard is designed for HO/O gauge model railroads and features a C-9 Factory New grading. Perfect for adding a realistic touch to your train layout, this neon billboard brings a piece of vintage Baltimore and Ohio railroad history to life. Any questions, just email. Shipping is $6.00 anywhere in the U.S.