1848-59 Post Paid 2d deep blue on greyish, early intermediate impression, error PENOE for PENCE of position 7, four margins and fine, cancelled central numeral “3” of Souillac in black, used on folded letter to Flacq via Port Louis SP 2 1854, small part cover missing at boxed Souillac datestamp and archive fold split reinforced, very rare on cover Expertise: Cert. BPA (1975), A. Diena (1974), Mondolfo (1975) and with Robson Lowe opinion (1975)