Marconiphone, Inc. D Get a print! $8.00 Add to Cart Product Information: Model:D Manufacturer:Marconiphone, Inc. (Marconi Bros. Inc.) Schematic Pages Page 1 Schematics Content Page 1: Mode 1 - # D+DE 1937 Please note: we carry a wide range of products which will fulfill the specifications above. Please use our search function or browse our products to find what you need!