1936 Matanzas Issue, imperforate top sheet corner margin blocks of four, complete set of gummed proofs (56 stamps) from the Waterlow and Sons archives, each stamp with security punch, n.h., v.f. (Cat No. 324-31,C18-21,CE1,E8) (Image)

Est.$250

1936 Matanzas Issue, imperforate horizontal gutter blocks of four, complete set of gummed proofs (56 stamps) from the Waterlow and Sons archives, folded and with defects away from the stamps, which are n.h., v.f. (Cat No. 324-31,C18-21,CE1,E8) (Image)

Est.$350

1936 General Maximo Gomez, 1c, 4c and 5c imperforate, also 2c and 8c perforated, complete set in blocks of four, gummed proofs from the Waterlow and Sons archives, each stamp with security punch, fine-v.f. (Cat No. 332-36P) (Image)

Est.$250

1937 Brazil and Canada, 2c imperf. se-tenant gutter pair in green, proof on stamp paper, v.f. (Cat No. 342-343P) (Image)

Est.$250

1937 Brazil and Canada, 2c imperf. plate proofs on card, two horizontal gutter pairs in green, v.f. (Cat No. 342-343P) (Image)

Est.$250

1937 Chile and Colombia, 3c Henriquez and Santander, imperf. plate proofs in green, se-tenant gutter pair, v.f. (Cat No. 344-345P) (Image)

Est.$250

1937 Chile and Colombia, 3c Henriquez and Santander, imperf. plate proofs in blue, se-tenant gutter pair, v.f. (Cat No. 344-345P) (Image)

Est.$250

1937 Chile and Colombia, 3c Henriquez and Santander, imperf. plate proofs in green, two bottom margin horizontal gutter pairs, one with natural inclusion in margin, v.f. (Cat No. 344-345P) (Image)

Est.$500

1937 Costa Rica and Cuba, 4c imperf. plate proofs in green, se-tenant gutter pair, v.f. (Cat No. 346-347P) (Image)

Est.$250

1937 Costa Rica and Cuba, 4c imperf. plate proofs in blue, se-tenant gutter pair, v.f. (Cat No. 346-347P) (Image)

Est.$250

1937 Costa Rica and Cuba, 4c imperf. plate proofs in green, a horizontal pair of the former and vertical gutter pair of the latter, v.f. (Cat No. 346-347P) (Image)

Est.$500

1937 Dominican Republic and Ecuador, 5c imperf. plate proofs in blue, se-tenant gutter pair, v.f. (Cat No. 348-349P) (Image)

Est.$250

1937 Dominican Republic and Ecuador, 5c imperf. plate proofs in green, horizontal or vertical gutter pairs, v.f. (Cat No. 348-349P) (Image)

Est.$500

1937 Dominican Republic and Ecuador, 5c imperf. plate proofs in green, se-tenant gutter pair, v.f. (Cat No. 348-349P) (Image)

Est.$250

1937 Dominican Republic and Ecuador, 5c imperf. plate proofs in blue, horizontal or vertical gutter pairs, v.f. (Cat No. 348-349P) (Image)

Est.$500

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs on card, se-tenant gutter pair in blue, v.f. (Cat No. 350-351P) (Image)

Est.$250

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs on card, horizontal pairs in blue, v.f. (Cat No. 350-351P) (Image)

Est.$500

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs on card, bottom margin horizontal gutter pairs in blue, v.f. (Cat No. 350-351P) (Image)

Est.$500

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs in green, bottom margin horizontal pairs, v.f. (Cat No. 350-351P) (Image)

Est.$400

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs in green, se-tenant gutter pair, v.f. and rare (Cat No. 350-351P) (Image)

Est.$250

1937 United States (Lincoln) and Guatemala, 8c imperf. plate proofs in green, horizontal gutter pairs, v.f. (Cat No. 350-351P) (Image)

Est.$500

1941 Fifth Column, vertical imperforate pairs, five different plate proofs in brown, on stamp paper, v.f. (Cat No. 375-79P) (Image)

Est.$500

1942 Globe, 1c imperf. plate proof in green, horizontal gutter pair, v.f. (Cat No. 368P) (Image)

Est.$250

1942 Arms of Cuba, 3c imperf. plate proof in blue, vertical gutter pair, v.f. (Cat No. 370P) (Image)

Est.$250

1947 Antonio Sarret, 1c and 2c, imperf. plate proofs in green, vertical gutter pairs, v.f. (Cat No. 407-408P) (Image)

Est.$250