question about cuda quik fill gas cap

I have a question about the flip open quik fill gas cap for my 67 cuda. Did this gas cap bolt directly to the fender, or was there a stainless or pot metal chrome trim under the cap like the 68 thru 70 dodge chargers had.

It is the same cap as a '68 Charger but without the "fuel cap ring". '69 Barracuda, '69-'70 Charger, and the Challenger have the same cap except it says "Fuel" on it.