This image is of the medieval illustration of the Annunication of the Virgin Mary, an excerpt from the Book of Hours.
The caption on the back states:
DETAIL OF ILLUSTRATED MANUSCRIPT
THE ANNUNCIATION
BOOK OF HOURS, ABOUT 1430, FRENCH
COLLECTION OF HERBERT PELL
NEWPORT, RHODE ISLAND
–The Book of Hours is not a specific book, but a type of book used by Catholic parishioners to assist them in their prayers. Since they were all hand made in the medieval era, each book is unique but still contains many of the traditional prayers and devotionals common to the era it was made.
This card likely dates from the 1960s.