Monstrance clock ca. 1565-70 Movement attributed to Master CR Known as a mirror clock for its forms similarity to a looking glass, this has also been called a monstrance clock because it resembles the receptacle for the consecrated host. Religious references in early clocks reflect the Renaissance linking of science and the cosmos to the idea of divine order. This clock displays the hours, days, and a wealth of celestial information. Though not accurate timekeepers, early clocks were valued for their craftsmanship and technical ingenuity: luxury items designed to educate and impress.. Monstrance clock. Stem and foot probably cast from designs by Matthias Zündt (German, probably ca. 1498-1572 Nuremberg). German, Nuremberg. ca. 1565-70. Case: gilded brass and gilded copper; Dial: gilded brass; Movement: plated frame of iron, iron wheels. Horology