1935 Bolivar Issue, set of four, 1s on 5s double overprint, used on registered FDC from Quito (July 24) to New York, with Miami transit and New York arrival pmks, v.f., signed Bloch (Cat No. C37a) (Image)

Est.US$250

1953 Pan-American Highway, set of three die proofs mounted on original card, with penciled corrections, Security Banknote Co. approval label on back, v.f. (Cat No. C242-44P) (Image)

Est.US$150

1960 issues, two different sets, imperforate horizontal pairs, n.h., v.f. (Cat No. C401-03,C16-18var) (Image)

Est.US$100