Indian? Mercury? Vintage Automobile horn cap? Hub cap center?

[Charmin]

What is this? A vintage steering wheel horn cap cover? or hub cap center? And is that an Indian or Mercury? something else?
I gave 50 cents for it at an estate sale last weekend.
Thanks for any help!

 

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[gravityrules]

Perhaps a Pontiac horn button ?

 

[Enginefitter]

Here you go buddy, gravity got it right.

Close but not exact, just a shade off.

You did well.

1955 Pontiac Horn Button Steering Wheel Center Cap Chieftain Star Chief | eBay

Here is another one.

http://www.ebay.com/itm/Vintage-Pon...on-1950s-Pontiac-Rare-Red-Color-/231618795917


Engine

 

[Charmin]

Thanks gravityrules and Enginefitter! I thought it was probably a horn button but couldn't come up with the right car.
You guys are awesome!!