 Between 1922 and 1983 <unk> an <unk> , the Irish Post Office , a section of the Department of Posts and Telegraphs ( P & T ) , issued all postage stamps in the 26 counties of Ireland . During this time they employed some of the following companies to overprint or print the stamps : Dollard , Thom , Irish Government Printers , Waterlow and Sons ( London ) , De La Rue and Co . , Bradbury Wilkinson and Co . , Ltd . , ( London ) , Harrison and Sons Ltd . , ( London ) and Irish Security Stamp Printing Ltd . 
