Argentina — Schirnbock collection of imperf proofs as follows, 12 imperf proofs on card including…

Description

Schirnbock collection of imperf proofs as follows, 12 imperf proofs on card including issued and unissued colors, 2 imperf proofs on thin paper in unissued colors, group of 6 imperf proofs on card of UNISSUED VALUES including 15 cents, 24 cents and 90 cents in blue, light blue, red, brown and green. Rare. Finally, a superbe group of the UNISSUED 2 Pesos with 6 DIE PROOFS in green, mauve, blue, violet, brown and red with pencil notations at reverse "A1", "A2", "A3", "B1", "B2" & "B3" meaning the different trial printing made for this value. Very rare.