A better question is, what is this ??

[levinll]

Looks military, but with the U in the background it might be something to do with a university.

It measures about 1 1/4" in width.

There is writing on the reverse, but I can't make it out.

 

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[Mackaydon]

Welcome to Treasure Net !!
Perhaps the Members here could read the writing on the reverse if you provide a close up, in focus, pic.
Interesting pin, for sure.
Don.......

 

[gilgar]

Is that a hammer & sickle in the middle?

 

[levinll]

Looks like the name/address of the manufacturer.

 

[levinll]

Not a hammer and sickle.

 

[Mackaydon]

Is it possible to clean the black crud from the reverse side that runs through the letters?

 

[Lafitte Deux]

The last name looks like Clust.
So it may be a type of Track and Field pin or award.

 

[Mackaydon]

If it is a Track and Field pin, the AC could stand for Athletic Club and the wings could represent fleetness afoot.

 

[levinll]

I tried using soap and water but the crud remains. Any idea on how to remove it ?

 

[Mackaydon]

How about tracing the letters to ID more of them.
The bottom line may be an address; like "25 Conxx St. N.E."
Don.........

 

[Lafitte Deux]

Dieges & Clust were (and maybe still are) located at 23 John St. N.Y.
They were prolific makers of military and sports trophies and medals.

 

[lucky larry]

Before reading last post I was going to say it looks like St. John's st, NY. So I bet you're right