[Crowned Greek astronomer Ptolemy and his Renaissance translator Regiomontanus, seated beneath an armillary sphere and surrounded by decorated border]

Frontspiece in: Epytoma in Almagestum / Regiomontus. Venice : J. Hammam, 1496.
Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1987, p. 29.