5 c. dark blue, sheet of 50 with all selvages, with full inscriptions at top, a few hinge reinforcement, separated perfs and trivial gum toning, still fine and very scarce

1892, Americas Discovery 5 c. Trial Colour Proofs (6) on thick card, incl. one in adopted dark blue, sharp impressions, also an official commemorative souvenir card for the stamp issue (toned), very fine and rare assembly

1856/1943 (ca.), unused collection, neatly mounted and described on album pages, incl. Corrientes, Mi.-Nr. 4 and I in large blocks identified by types, later issues specialized with Colour Trials, some printed on thick cards, also "Muestra" overprints, etc., some photocopies throughout, some occasional faults, mostly fine