28/3/51 No watermark* Dull Green 6 electros 5 used +flush perfs std Posn sep 1955 type 'oo' and oOo perf pips (may 58) 194,334,240 No imprint, Feb 1956 This long running issue became part of the QEII series and was eventually replaced by the 2d QEII on 21/3/1962

From 1948, stamps of the general (definitive) series below the current letter rate were issued on Unwatermarked paper. Initially introduced to cover the 3rd class international mail rate.