# 3906-09 (2005) US Scientists - Sgls, Set/4, MNH
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US 2005
BARBARA McCLINTOCK (Geneticist), JOSIAH WILLARD GIBBS (Thermodynamicist), JOHN von NEUMANN (Mathematician), and RICHARD FEYNMAN (Physicist)
American Scientists
BARBARA McCLINTOCK (Geneticist), JOSIAH WILLARD GIBBS (Thermodynamicist), JOHN von NEUMANN (Mathematician), and RICHARD FEYNMAN (Physicist)
American Scientists
Self-Adhesive Gum
Scott 3906-09
Die Cut 10.75
Stamp Singles, Set of 4
Die Cut 10.75
Stamp Singles, Set of 4
Mint Never Hinged