A Perpetual Almanac" -- c.1820 Perpetual Calendar

United States, 1820. Very good. Dust soiled, with short tear to paper keeping mechanism flush on back . Corners nicked.. An attractive perpetual calendar from c.1820, engraved with hand coloring, and featuring an allegorical image of Time in classical dress and wings, holding an hourglass in one hand and a sickle in the other. Below, there is a grid of numbers for each day; on the left is a column for the days of the week, and on the right is a column with the months. The days of the week shift when a tab on the underside of the calendar is gently pulled down or pushed upwards. A later ink inscription on the verso reads, "Perpetual Calendar made by John C. Eckel in the year 1820- Hand painted + pasted- Printed first _ colored - Found 1927 by Earl- 127 years old up to date". Sadly there is no indication who "Earl" was or where he found this item. Measures approx. 6.25" by 4.25