The picture below shows a larger front and back view of this Boston Museum of Science & Hayden Planetarium Advertising Souvenir Perpetual Calendar. This metal Perpetual Calendar dial was good for the years from 1961 to 1988. It was manufactured by Anderson & Sons, Inc. of Westfield, Massachusetts. Besides the calendar, days, and years, it is marked on the two sides as follows: MUSEUM OF SCIENCE AND HAYDEN PLANETARIUM BOSTON MASSACHUSETTS 1961 - 1988 PLACE YEAR UNDER MONTH BLACK MONTHS FOR LEAP YEAR ANDERSON & SONS, INC. WESTFIELD, MASS. MFRS. The calendar dial measures 1-11/16'' wide. It appears to be in mint condition as pictured. |