NAURU 1916-23 5d yellow-brown variety, SG9b var South West Africa stamps the upper pair with additional

the upper pair with additional inverted albino overprint on the gummed side

included a photograph of himself and poked fun at his famous 'alter ego' of Lewis Carroll:

North Borneo 1902-12 'BRITISH PROTECTORATE' 10c brown and slate-blue Postage Dues 'Sun Bear'

Rosenthal was his attorney and agent in Paris as well as a member of the French Bolshevik-Leninist movement

Great Britain 1840 1d Mulready envelope (Stereo A154)

NAURU 1916-23 5d yellow-brown variety, SG9b var South West Africa stamps the upper pair with additionalNauru 1916 23 5d yellow brown, type 1 overprint, DOUBLE OVERPRINT ONE ALBINO (with the albino impression mm to left and 1mm below the inked overprint) and exceptionally showing variety 'Short left stroke to N' (R1 8), from 'H16' printing, SG9b var. A fresh and fine mint example with large part original gum. Exceptionally rare as one of only two possible with this combination of varieties. Provenance: Ex Keith Buckingham (Grosvenor 28 2 2006, lot 827).