ARTIFACT: This is a World War II United States Army Air Forces 3501st AAF Base Unit (Technical School and Overseas Replacement Depot) jacket patch. The unit was stationed at Boca Raton AAF, Florida. 

 VINTAGE: Circa World War II. 

 SIZE: About 4" in diameter . 

 MATERIALS / CONSTRUCTION: Cotton/silk embroidery thread on wool. 

 ATTACHMENT: To be sewn onto garment. 

 MARKINGS: None. 

 ITEM NOTES: This is from a United States Army Air Forces patch collection which we will be listing more of over the next few months. MGEL06 LCEJX05/08  SLDIEX10/09/19 afsq20005br 

 CONDITION: 8 (Excellent-): Very minor wear and soiling. 

 GUARANTEE: As with all my artifacts, this piece is guaranteed to be original, as described.