Satin or Gloss Black?

Gloss. But in 1968 they are the same color as the body. Black cars of course got black rims.

It wasn't until around March of 1971 that all dog dish cars got gloss black rims.

Exceptions would be:
1969 1/2 440 6-pack Road Runner and Super Bee (gloss black w/o dog dish)
70 Challenger T/A's with optional trim rings (gloss black) ? Maybe optional on other 70-71 E-bodies ?