I just purchased the signal at a country auction and the only markings are D.R.G.M. on the base and cast into the signal lever. The signal is in pretty nice shape for it's age and I'm guessing that it is Bing. One lever is broken and I need to fabricate a replacement.
The bridge approach ramps were found in a box of Lionel track and I have no idea who made these. The ramps are O gauge and I find it especially strange that the track has "super elevation" on a bridge approach. The track is riveted to the ramps and appears to be original to them. There are no markings on the ramps or track.