I found this great Madison Ave street sign.... not sure if it is from New York (Manhattan) or possibly Chicago. It is double sided, yellow with black lettering and black edges. It measures 9" x 36" and is metal. If it is from Manhattan it would be from the 1970s. I was hoping somebody out there might know something or could point me in the right direction. Either way it is a very cool sign, just wish I could find out more about it!