"Kalendarium Juliano - Romanum Perpetuum, auctum cyclis Solis & Lunae, Feriis dierum, Fastis seu Festis Vet. Rom. Diario Rerum memorabilium, Lunationibus, & Indice Dierum quotidiano & Viro celebrr: I. Georg: Graevio D.D.D. Nicolaus Haring", Halma, Francois

This is a fine copper plate engraving of a perpetual Julian/Roman calendar. The large (22") circular calendar is filled with an amazing amount of information. It is surrounded with Latin text to the neat line. Along the bottom is Halma's name plus that of Constantini Magni and the placename Principis Nassoviae. A most uncommon issue.

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Condition: A

This example is near fine with thick hand laid paper and full margins. The dark impression was obviously made early in the plate's life. One small fold intersection split.