This is a National Pfanstiehl radio made in Chicago during 1932. I bought it from the Volo Antique mall in Volo, IL. in May of 2010. I haven't been able to find the model number or the schematic. It looks good for being as old as it is. There is a label glued to the back of the chassis that traces it to Dreyer Electric Co. in Arlington Heights, IL. December 20, 1932. Wow!