Howdy Folks:
FYI>>>Fortunately, my wife found the lost insert in the house. I was able to remove the opposite one by minimun effort with my fingernail. So, I refastened both with contact cement and clamped. Some others may be at risk of having old glue too.

 

Mine all came off, both the XKR and the XJR. Couldn't find the older gold ones, but these newer-style are the same size and dirt cheap. They look great.

10PCS 14MM Jaguar Remote Flip Key Fob Case Logo Badge Sticker Emblem | eBay