Do any of you have a clue what this would be? Installed in a 1920s home in the U.S., about 4" diameter. Fastened to the door between kitchen and dining room.
Asking multiple boards. Nobody seems to know yet.
It look like a vent for a smoker, perhaps it was just decorative?
>>921436
> Fastened to the door
> Has Open and Closed written on it
Looks like a strange doorknob to me. Does it connect to mechanisms inside the door, or is it just a non-functional piece of metal bolted to the wood?
>>921437
This makes sense. Looks like it could have been a check valve.
>>921436
What does the other side look like?
>>921436
Looks like the damper off a wood burning stove
i believe its an old coal furnace dampener
>>921440
>Looks like it could have been a check valve.
>Has Check written on it
>>921526
Don't judge a book by its cover, anon
Looks like it goes on the ashpit cover of a Homer pipeless furnace. the circle thing at the bottom, they ads I could find were from the 20's made in you guessed it coldwater michigan
