sentences:  Malta issued its largest set on 10 August 2012, when 88 stamps depicting ships which had taken part in Operation Pedestal were issued.Malta used postage due markings on mail throughout the 19th and early 20th centuries, but only issued its first set of postage due stamps on 16 April 1925.The first set consisted of ten imperforate provisional stamps with denominations ranging from ½d to 1/6, and they were typeset at the Government Printing Office in Valletta.