The parts list I looked at also shows 44477-99 as the part number for the 2005, 2006 and 2007 CVO eglides, and it's a plain chrome insert (no black lettering). The standard Electraglides use part number 44338-00 and it costs half as much. Did the dealership have the 44477-99 in stock so you could eyeball it?
Your picture didn't look quite right to me so I went out and looked at my '05 for comparison. My 44477-99 insert is rounded on the ends and is plain chrome, no lettering. So I'm confused. I guess we need someone with an '06 CUSE to post a picture of what his looks like. Are you sure that's a stock caliper? It sure looks like the chromed caliper Harley sold in the catalog back then, and that's not what came standard on the bike.
Jerry