Did the early '69 Mark III's have a chrome cowl vent instead of a body colored cowl vent in the rear? I don't believe I have ever seen one that was chrome installed.
"Not many know, but the very first (we're talking when production was still in the double/low triple digits) Continental Mark III cars off the line had a chrome-plated rear cowl vent between the rear glass and the decklid. Due to some chrome-plating/manufacturing defects, the cowls were quickly changed to "body color" instead." - eBay Ad
http://www.ebay.com/itm/EARLY-LINCOLN-C ... 48&vxp=mtr