Astronomy: 1990

Issue Date - October 16, 1990

SG 1522 - Armagh Observatory, Jodrell Bank Radio Telescope and La Palma Telescope, 22p

SG 1523 - Newton's Moon and Tides Diagram with Early Telescopes, 26p

SG 1524 - Greenwich Old Observatory and Early Astronomical Equipment, 31p

SG 1525 - Stonehenge, Gyroscope and Navigating by Stars, 37p

First Day of Issue Official Covers