This piece is NOT marked (that I could find) with any makers mark. It is used but looks and feels solid. Good Luck!
Adlake Railroad Switch Lamp lens ring clamp inner and outer Non Sweating
Adlake Railroad Switch Lamp Train Lantern Top Cap Vent Assembly
Adlake Railroad Switch Lamp Fount Train Lantern Fuel Pot
Adlake Railroad Switch Lamp Vent Cone Fits Square Top Non Sweating Model