I suspect, due to the crest on them, these came from something golf-related--perhaps a blazer. The quadrants on the shield are filled with crossed clubs, a trophy, a pine, and water.
There are six of these and they are in good condition, with most of the wear and tarnish confined to the back. I suspect that these are brass because it appears an early plastic button stored with one of these has left a stain on the front of one of them.
I make use of recycled packing and shipping materials, both to be eco-friendly and to minimize shipping costs. So don't worry--it might have come to you in an old television box, but your item was packed with care to arrive safely on your doorstep.