3 Patch Lot US ARMY 12th AVIATION WASHINGTON DC + DET 2 Co H 171st AVN Texas Aviation SHERPA + HS-4 BLACK KNIGHTS HELICOPTER + CARRIER AIRBORNE EARLY WARNING WEAPONS SCHOOL Squadron Patches, all four are being sold together as a lot for one price (SEE SCAN).  A Quarter (same size as a one euro coin) is scanned near Patches to better display the size, which in most cases is approximately 4 - 4.5 inches).  See other similar lots I am listing today.