1890-1960, in a beautiful and very unusual set consisting of several old letters and envelopes (including Y&T No. 21a on a letter) as well as a large number of colour essays, imperforates, deluxe proofs, artist's proofs and various other curiosities, mainly from the 1940-1950 period. A very interesting and atypical collection, with a very high total value, B/TB. For amateurs!