Thanks to everyone for their input, Cal55 I did indeed get the photo, thanks.

So from what I have learned thus far:

Some of the wheels had the molded in ears on them and some had tabs welded to the wheel. It looks like the hubcap I have must be for a stock chevy wheel with the tabs that are welded on.

Here's the picture of the back of the hubcap:
http://good-times.webshots.com/photo/2400531110103882008lLoGQC

And here is the front of the hubcap:
http://good-times.webshots.com/photo/2945588990103882008GkQXaX

Anybody got the wheels with the weld on tabs on their 1960 thru 1966 C10? By chance could you send me a picture of the wheel?

In the Stovebolt Gallery ~~ "The Orange Crate" 1965 C10 SWB Step Side Build Thread

Inspired to be different. Different in a way of my own, not in a way that others strive.