Ambassadeur 1500C (A-A15-00C-0-010-M-C) Ambassadeur 1500C Decal Model commonly sighted with either a Black or Brown Decal. Dec 1977, Nil Revision An Ambassadeur 1500C schematic diagram with High Speed Decal #4547. This High Speed Decal was changed from Red Silver to Black Gold High Speed Decal but the same part number remains. Share this:FacebookX