1979 CX500 Standard. (We didn't get the A, B, C designations.) It had the later style indicators, square master cylinder, and gold highlights on the trim. At least some had a locking fuel cap cover like the Deluxe. All else identical to the '78.
R
P.S. I don't recall the spoke tabs (rivet covers) missing on the '79, but I've only seen a few examples.