Telescopes

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1957 Sc 1937-1939 International Geophysical Year Scott 1957-1959
$8.00 Select options
1962 Sc 2606 BL32II Soviet Scientific Drifting Station “North Pole” Scott 1767a
$65.00 Select options
1964 Sc 2884-2886. International year of the quiet Sun. Scott 2839-2841
$1.50 Select options
1987 Sc 5826-5828 Science in USSR Scott 5617-5619
$1.25 Select options