My 1st CLIMAX, but I expected something better!!!

[ModernMiner]

Well, after 47 years, I got my 1st "CLIMAX". I got all excited when I saw this sitting in the hole. It looked like a coin, and even had the edge of a coin, but I later found out it wasn't a coin.
Any idea what this is? It says "CLIMAX- Pat. Jan 21,90 - Made in USA".
I'm assuming that is 1890, by the looks of it.
Is it the back of a button? Shotgun shell head?
Thanks for your help,
MM

 

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[Jeff G]

Climax.....Small town in NW Minnesota near Fertile.

Hmm.. figured it would be closer to Dildo Newfoundland...

 

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[DANGLANGLEY]

Neat find to cause so many climaxes...Wish I could find one too. My wife is out of town.... Oh shi@, I didn't just say that

 

[NGE]

There is also a CLIMAX in Michigan, jusy before you get to Kalamazoo.

 

[mojjax]

I have multiple climaxes note: the stain is a coffee spill

 

[NGE]

WOW! Climaxes were all over the place in the olden days . If they were not, then I guess we wouldn't be here trying to I.D. these things

 

[stefen]

Don't know about making your Climax public, however, I got a screw

 

[Noodle]

you guys are bad ...