Air mail letter Beverwijk 10.XII.1941 to USA with child welfare 2½, 5 (4x) and 7½ cent (3x) with blue framed censor Zurück - Retour/ kein Postverkehr -  A.B.P. (return sender, no connection), December 10, 3 days after Pearl Harbor and the day before the US declared war on Germany, only handstamp of the Auslands Brief Prüfstelle without censor sealing or handstamp