Johnnie walker tin sign

Hi. I was wondering if anybody ever saw a Johnnie Walker tin Lithographed counter top display piece like mine. I couldnt find any info on it. Its heavy tin and stands 10 inches tall. Hes walking with cane and top hat with red coat and white pants with riding boots. The lower portion is green and It says, "Born 1820 still going strong Johnnie Walker Blended Scotch Whiskey" Alcoholic content 86.8 proof,Canada Dry Ginger Ale, Inc., New York, N.Y.
On the back side there is a bend out piece of metal to keep it standing and it says "To stand up bend back strut at dotted line". Its made by Grammes, Inc. Allentown, Pa. Litho in USA L126. I would like to know its age and if it is rare as I have never seen one before. Any help you could give me would be appreciated. thanks, Steve