Dear Arthur,

Thank you for your help and patience.

The presented object appears to be a gypsum cast sculpture with a height of 3 feet. This sculpture is a cast after an original by the French sculptor Auguste Rodin. It was made in the 20th century.
Comparable objects were recently offered and sold on the international auction market. 
This piece is in good condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 350 to 700 USD.
This estimate is based on actual recent past recorded auction sales of comparable items. Retail "asking prices" can be higher and may vary.

With kind regards,

George