This is a rare rear wing or fender reflector  for Rover 3500S, US NADA car. It is NOT the same part number as the European Three Thousand Five, so appears to be unique to the US/Canada 3500S.. It has good appearance. Right and left are the same. This fits below tail light assembly...I have  many other  Rover 3500S  parts; and hundreds of parts for all British cars 1950-1994, on my eBay store.. They are  arranged in 20 categories. If you don't see what you need, please ASK., and I will put it in the store for you..  Please inquire  1 954 JAGUARS  or   1 954 JAGPART, .. I have compulsively hoarded parts for 40 years years;  But have moved them to SEBRING, the Heart of Old  FLORIDA. I have the largest stock of  original Old English parts in the colonies, including Many Rover parts.. I also give free restoration advice, and am VERY knowledgeable of Rovers. SHIPPING, in the US  or OVERSEAS;  is Priority Mail ..Note, I also ship by Priority Express mail, which is faster with better tracking..Please inquire. James Dean, thejaguru.