Post office pin? maybe?

[Thejeffer]

Says .... post office department
united states of America


Just trying to figure out what it was.

Had a few ideas but I can't find anything online...

 

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[doublet2a]

Looks like an old name tag..
Is it thin metal??

Tim

 

[Thejeffer]

Yes pretty thin

 

[fyrffytr1]

How big is it? Could it be from a Post Office box? The number would go in the slot?
Never mind. I took the liberty of touching up your photo a little. I think it may have something to do with the Pony Express.

 

[Thejeffer]

Here's the size

 

[nhbenz]

Not yet sure of what exactly (guessing name tag), but I believe it would date 1956-65; http://about.usps.com/who-we-are/postal-history/letter-carrier-patches.pdf

 

[Thejeffer]

Asked a couple old timers around my town, they believe it was a name badge.