[LarryFS]

Thanks, guys.  The side of the resistor that you can't see in my first photo has some wound wire visible (see photo below).  I cleaned the wound wires and found a distance where I had continuity between two points.  Those points are marked by the small black markings and I read 90.1 ohms between the two.  Those points are 3/4" apart.  The distance to the inner edges of the terminals at each end is 1 1/4".  Based on that I figured the full resistance should have been approximately 150 ohms.  With Mondial's 10 watts, I now know what I'm dealing with.  

This resistor connected between pins 3 and 7 of the 5Y4 tube.  The schematic is included below.  I'll have to do some more head scratching on this but I suspect it replaced R13 which is a 160 ohm resistor rated at 1 watt per the parts list.  The radio is a Silvertone 4663.

Thanks for all the quick replies.
Larry