1923 Kingdom of Yugoslavia, set of five, each with security punch and overprinted "Specimen" in red, n.h., fine-v.f. (Cat No. 22-26S) (Image)

Est.US$500

1931 King Alexander, 25n brown-20d violet, imperforate proofs on white paper, nine different horizontal pairs, fresh and v.f., rare (Cat No. 77-85P) (Image)

Est.US$2,000

1972 Munich Olympics, imperforate proofs, set of six, v.f. (Cat No. 1093-98P) (Image)

Est.US$300

1972 Summer Olympics, two imperf. sheetlets containing the six values, v.f. (Cat No. 1093-98P) (Image)

Est.US$500

1935 "Jug II" flimsy with appropriate markings, franked with 50p green block of four, cancelled Hoce (20.VIII.35), v.f. (Image)

Est.US$250

1921 set of three, large die proofs on cards, v.f., extremely rare (Cat No. B1-3P) (Image)

Est.US$2,000

1918 SHS overprints, marginal blocks of 25, n.h., fine-v.f. set of multiples, with Fleck certificate, cat. $6775 (Cat No. 2LJ2-9) (Image)

Cat. $6775, Est.US$1,000