1930 UNDELIVERED MAIL LIVERPOOL TO DENMARK. Envelope Liverpool to Denmark with 1½d (SG420) cancelled LIVERPOOL 3 NO 30, postage underpaid with Danish postage dues 5 ore x 2 and 10 ore cancelled ESBJERG 6.11.30 but refused and returned to sender with various cachets. Stamp has "MLL" perfin of Meccano and reverse flap reads "MECCANO LTD/LIVERPOOL". Unusual. (Ref 108262).