This image is a deep relief marble sculpture replica of The Last Supper, a fresco by Leonardo Da Vinci. It is part of a much larger exhibit of marble work a the Vermont Marble Museum in Proctor, Vermont.

The caption on the back states:
The Last Supper
Carved from statuary marble from West Rutland, Vermont, is on display at the Marble Exhibit, Proctor, Vermont. Taken from da Vinci’s famous painting, it was hand carved in about 14 weeks from a single piece of marble.

–The Vermont Marble Museum is a large exhibition of marble sculpture and history located in a part of the Vermont Marble Company buildings.

This card likely dates from the 1950s.