Armillary Sphere Astronomy Device Lot x 3 Jeffrys engraved prints

Lot x 3 Armillary Sphere Prints.(Old Prints, 18th Century Prints, Engraved Prints, Astronomy, Orbits, Planetary Rotations, Armillary Sphere).Issued 1756, 1758, & 1788, London. Two engraved by Jefferys, one is anonymous.Interesting lot x 3 18th century engraved prints depicting an armillary sphere. While they appear at first glance identical, closer examination shows each one is a print pulled from an entirely different engraved plate.Nice looking example, pleasing age patina, old damp staining, etc., any age flaws minor and easy to overlook or forgive.Sheets measure c. 8 1/2" H x 5" W.Engraved area measures c. 7 3/4" H x 4" W.[B12272].