This image is a detailed closeup of the window itself, carved by Pedro Huizar. It is called the Rose Window, and the name is attributed to a woman Huizar had once known. This window opens on to the sacristy to provide illumination during services.
The description states:
THE ROSE WINDOW, MISSION SAN JOSE
San Antonio, Texas
According to legend, these stones were carved by Pedro Huizar in memory of his Spanish sweetheart Rosa — hence the name “Rosa’s Window” or Rose Window.
–This romantic legend is unlikely. The term rose window is common in Gothic architecture to describe a window in the south facade, such as this one, which provides light to the sacristy.
This card likely dates from the 1950s.