1946, registered commercial letter from the USA to Zittau from 6. March 1941 from there post office. The letter carries a British censorship strip, censorship stamp and handwritten notation of the censor, furthermore reverse an adhesive label "retained mail released from censorship. Eventual reply mailings must the current determinations correspond", arrival postmark "ZITTAU 1 i 3.9.46", and a handwritten notation "bank closed". A very rare document!