Ray-O-Vac Sportsman 6V Flashlight
(Works) 301 lantern 303 Red Flasher

Note: The batteries for this are hard to find.

This fits a long rectangular 6-Volt battery.
I don't have one of those and used some jumper wires for testing with another style of battery.
The small red light on the back is a flasher or beacon light.
This front lens looks to be made of a frosted glass.
Base Size: 5 1/2" Long x 3" Wide - 4 1/2" Lens
Condition: Works great! Some rust specks! See photos!
inkFrog