Button?

[Kapidr]

Found this on an east coast USA beach after hurricane Matthew. Is it a button? I'm not sure I want to try to clean it up more to be able to see what is written on the top, maybe someone can make it out from the pictures?

 

[nhbenz]

I think I can read Sampson on it. Maybe from Sampson Tool Mfg. Co., calipers and the like. Maybe a pivot from?

 

[cudamark]

Inner tube repair kit. I've found several of them through the years.

 

[nhbenz]

Yes indeed! Now I remember these showing before. Patented in 1899 by R.W. Sampson for fixing punctures in tires, hoses and tubing: Patent US632540 - Puncture-closer for pneumatic tires. - Google Patents