Name these Pontiac emblems
 

Saved these two from a scrapper. The older one has a part number that reads: 514686, the newer one: 538840. Thanks!

538840 is a radio delete plate for a 1961 full size Pontiac, which is kind of desireable if you're building a race car replica. I can't place the other one but it looks 1950s era.

The upper one looks like it goes on the front of the hood on a '51.

Thanks. I'll put the radio delete plate on Ebay and see if it generates any interest.