Neat Adams & Westlake lamp likely used on a bumping post or swing gate . The lamp has an embossed C&NW RR tag on the rear of the lamp and both a side pocket mount and bottom switch style mount. The interior of the body has the original Adams & Westlake patent tag. Red lens installed and the STOP target has some minor rust near the bottom. The burner pot and fount are not present nor is the chimney insert. The lamp has one condition issue and that is that the bottom base solder joints have broken and the bottom will come loose if enough pressure it applied. Solder joint appear to be a clean break and can be repaired without much trouble. A very unique lamp!