Brass Equinoctial Ring Dial

Description:

Brass Equinoctial Ring Dial, signed Johann Martin in Augsburg, with meridian ring divided 0-90 through one quadrant, hour ring engraved in Arabic numerals 1-12-1, engraved with the names of thirty European cities and their latitudes, the bridge with floriate-form axis, Zodiacal calendar in symbols on one side and initials of the calendar months on the other, dia. 2 1/2 in., (lacking cursor, pinhole and pins).
Estimate $600-800

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