Lockheed SR-71 Panel. Many SR-71 part numbers begin with 4A. This part number is 4AT413-509. Complete Panel. Some minor paint loss. Maximum length is about 20 inches. Stellar SR-71 item for your Blackbird collection !  Autographed by Bill Flanagan, SR-71 RSO. 
Black with red where the screws insert. The black and red paint is a reminder of the low visibility numbers and markings used by the SR-71's from about 1982 / 1983 until they were initially retired in 1990. Super historical artifact !      

On this auction shipping to the United States only. Study the photos carefully. They form a large part of the description. 
All sales final. No returns.     

Buyer is responsible for all taxes when purchasing. No charge for shipping this auction. On this auction shipping very likely by USPS with insurance. Payment by Paypal only. Payment is due within 3 days of the end of the auction, or the auction is null / void, and the item is eligible to be relisted. Ebay is not what I do for a living. Will ship within 10 days of receiving payment. If this is a problem for you, do not bid, buy, or offer. Thanks for looking. May God protect and bless the United States of America.