A San Francisco couple has discovered a mysterious sculpture in their backyard. The couple believes it may have been created by a famous Art Deco artist. The sculpture was found by Greg Gatwood while he was digging in his Russian Hill backyard.

The couple thinks the sculpture could be the work of Ralph Stackpole, a well-known muralist and sculptor. Stackpole has a connection to San Francisco, having created the statue in front of the old Stock Exchange and murals inside Coit Tower. Further details about the discovery and the couple's efforts to determine the sculpture's origins are available from NBC Bay Area.