1D ARCHER EXPERIMENTAL PERFORATION PL.96 (SG16b)(RA) ON 1851 ENTIRE PENRYN TO LONDON. 1851 letter Penryn (Cornwall) to London with a very fine 1d Archer pl.96 lettered RA tied light strike of the "608" numeral of Penryn. On reverse PENRYN date stamp 18 JA 1851 and London receiver JA 20 1851. One of only four Archers recorded used on cover in Cornwall, the others being pl.96 (Bodmin), pl.98 (Bude) and pl.101 (Falmouth). (Ref 108048).