According to owner Rick Spector (of Stairway to the Stars), the Joan sculpture:

"...is 23 inches tall, 8 inches wide at the base, and signed by noted sculptor Gilbert Riswold and dated 1931. Cast at the California Art Bronze Foundry LA and so stamped. On one side is the comedy mask and the other tragedy, denoting she is an actress. I think the gown closely resembles one worn in This Modern Age, done the same year. It has two flange brackets underneath to fasten it to something. Riswold is known for his monumental statues around the world with 12 listed in the Smithsonian directory and three in the National Portrait Gallery. He had just moved to LA in the spring of 1930 and died in Hollywood in 1938."

EDITOR'S UPDATE: After years of searching, Rick is, as of November 2025, now also the proud owner of the accompanying Doug statue, also sculpted by Riswold and part of the recent Estate of Douglas Fairbanks, Jr., auction by Doyle. The statue is 23-1/4 x 8-1/2 X 5-5/8 inches and dated 1932.

More info on the Doug sculpture, and the pair, from Rick's recent letter to a Doyle agent:

"...The piece is half of a set, commissioned by Joan Crawford, then Doug's wife, in 1931 from famed monuments sculptor 
Gilbert Riswold....He had just finished the Mormon Battalion Monument in Salt Lake City. He was known for the 

WWI monument in Oak Park, the statue of Stephen Douglas outside the Illinois State House and the very large statue 

of assassinated Idaho Governor Frank Steunenberg. I especially like his marble sculpture of Beethoven in Chicago. ...
The other half of this set is, of course, Joan herself, which I have owned for many years. It came from the estate of 
Billie Nelson Tyrell, a dear friend. Now after 92 years, they are reunited. Doug mentions the pair in his autobiography 
SALAD DAYS, but mis-remembers the artist. He attributed them to Prince Paul Troubetskoy, who had done a bust of his 

stepmother Mary Pickford in 1919. ... 
Joan is in costume from THIS MODERN AGE and Doug is attired in his DAWN PATROL garb...."