The Helen Davis Collection of Penguins: Tristan da Cunha: 1948 “THE TRISTAN VENTURE” illustrated printed cover bearing 1d. penguin ‘potato’ stamp tied by fine type VIII cachet, addressed to Cape Town by E. Dawe, Chief Mate of the M/S “Peque–a”, with Mar. 15 arrival c.d.s. on reverse, this being the last use of the type VIII cachet. Photo. (Image1)

The Helen Davis Collection of Penguins: Tristan da Cunha: 1949 envelope addressed to Worcester, Cape Province, locally redirected, showing a rare example of 1d. penguin ‘potato’ stamp, a marginal example tied by type IX cachet, apparently accepted for postage with Cape Town Paquebot Oct. 14 1949 c.d.s. Photo. (Image1)

The Helen Davis Collection of Penguins: Tristan da Cunha: 1954 11/2d. Rockhopper Penguin, stamp-sized die proof of vignette on gummed, unwatermarked wove paper. Rare. Photo. (Image1)

The Helen Davis Collection of Penguins: Tristan da Cunha: Original drawing (240 x 169mm) by islander Gary Repetto (13) showing rockhopper penguins among the tussock grass on Nightingale Island, the design chosen for the 1979 International Year of the Child 20p., with accompanying letter from Gary and his brother Darren. S.G. 271 E. Photo. (Image1)

The Helen Davis Collection of Penguins: Tristan da Cunha: Booklets: 1957 3s.6d. without postmark on back cover and 1958 3s.6d., both exploded for display. S.G.SB1b, SB2, cat. £380. (Image1)