Nice Drake R4C. Serial number is 20512. It has 6HS6 mixers and the 5 position filter selection. With a 500 HZ filter installed. Works great. The cabinet is straight but has a few marks/scratches on the sides. Non smoking shack. I have lots of large pictures if you want. $325.00 plus some help on shipping. I can take PayPal. 73 and thanks Jim W7RY