This is a solid copper piece found at a 100 year old home. It appears to have threads on the little pointy part. Maybe an engine for a toy plane?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Mostly based on color and size, my first thought was a knob off a copper pot or tea kettle lid.
View attachment 1476699