One new in box very rare JAN-CRP 12AX7 CV-492 Raytheon 1954 Long Grey Plate 

                         square top getter , Tested New and more at 1350/1450 GMT  with a Stark 9-66 ( Hickok ) 

                         when the results are 725 for minimum working and 1150  for a new tube . 

             

                

                                  Shipping is $18 for Canada , $15 for USA and $25 for others countries.