This is a rare and much coveted piece among vintage costume jewelry collectors. It is a design by Marcel Boucher, patent number 128,104 which was filed on April 8th, 1941 and granted on July 8th, 1941. This is quite large, measuring almost 4 inches from top to bottom and 3 1/2 inches wide. Green enameled leaves are accented with crystal clear rhinestones and the cobs themselves are enameled as well. This is featured on page 54 of the volume by Brunialti, Carla Ginelli and Roberto, American Costume Jewelry Art and Industry, 1935-1950, A-M, published in 2008. It is marked "DES PAT'D and a set of initials which are barely visible. This brooch received a rare 5 star rating in Brunialti's book. Condition: there is some plating wear to the rhodium on the back but as you can see from the pictures, overall the plating is in good condition. There is some wear noted on the front as well, in a few spots to the enamel (under magnification) and some on the corn. The type of wear/coloring on the corn seems to be prevalent with this particular brooch and I wonder if was intentional when manufactured. Also note some yellowing of a few of the clear rhinestones. Overall, given the age of this magnificent brooch (70+ years), it is in fine condition.