Here is a nice 2nd generation Zenith Royal 500 with the printed circuit board. The serial number is 232,939 and this is dated the 36th week of 1957. The seven transistor 7ZT40Z1 chassis has been recapped and aligned to assure peak performance for years to come. The chassis is clean and has all seven of the original transistors. The maroon cabinet has a nice shine and is almost scratch free.