[whirligig]

Yes Terry, you and Ron nailed it. The unit is a model 66 per label on chassis.
   

I blew out the debris collected in the tuner but it also required a tweak on the rotor adjustment screw to finally eliminate the pop and scratch. The SW dial covers 1.5 to 2.4 mhz. AM is only 550 to 1500kc which made alignment interesting since the high side is suppose to be align to 1700kc in the alignment instructions. I was able to align the radio to 600kc and 1400kc. Went back and forth until to improve the sensitivity. Its playing well on AM. I left SW alone. Here's the dial of the 66.

   

Are there any performance of cost difference between the Model 60 and 66? I've looked at several of these ranging from 1934 to 36 and I couldn't find any consistent between the band coverages.

Thanks everyone for all your help.