What Is It?

[bartshop62]

I found this in a early 1900s house What Is It? How Many years old is it? What century? It was right on The surface u CAN see The imprint in The third photo. Im guessing its cast Iron. Im guessing Its Modern if it was on The surface. Or i could be wrong tell me if im wrong or right tell me ur guesses thanks and i will follow you [emoji3].

 

[Older The Better]

Sorta looks Iike a broken cotter pin, but I’m just throwing a guess out

 

[bartshop62]

Sorta looks Iike a broken cotter pin, but I’m just throwing a guess out

How old??

 

[releventchair]

Could be a form tie for concrete.
They can be knocked off /broken with a hammer after concrete dries for a flush surface.