5 Neugroschen lilac, single franking on very thinly cover silk paper, perforation of the stamp issue typical irregular, slightly creasely through as directed use to the franking, cancelled by dual circuit cancel "LEIPZIG 5 23 SPT. 66. " mailed to Belfast, Ireland over London, to the business address from Johnston&Carlisle, a fabric wholesaler, reverse single circle transit postmark from London and Belfast, frontal red "LONDON PAID", clean opening tear at the top, flap completely preserved, very tidy legitimate condition, very rare destination, not by Michel listed