Concorde Orange Disc.

[Gwyn Samuel]

A friend of mine has an orange, plastic disc that was found in the attic of a deceased relative. It is 23 inches in diameter and has Concorde VP 2003 embossed on it...wont let me attached photo. Any ideas what it is?

[Bagheera S]

Orange is the colour used to identify flight test specific parts. 23 inches I think is the wheel diameter so maybe a wheel cover?