Won on Ebay on February 26, 2013 for $10.50 with shipping for $11.37 from Twin Falls, Idaho. Bought from Adrienne known on Ebay as auction*junkee.  She said she found it at an estate auction at a farm in Idaho.

Based on the logo it was manufactured between 1919-1940 per http://www.griswoldcookware.com/history.htm