[klondike98]

Welcome to the Phorum!
You can check with these folks to see if you can find some knobs: http://www.philcoradio.com/resourceb.htm#l

If you are new to repairing/restoring vacuum tube radios, I'd read this first: http://www.antiqueradio.org/begin.htm

Ron lists a lot of sources for parts here: http://www.philcoradio.com/resourceb.htm

Grill cloth for that model would no longer be reproduced but a trip to a fabric store; a look on ebay or a visit to the sites listed here: http://www.philcoradio.com/resourceb.htm#k and you should find something.

Here's a photo of one with grill cloth in it, though I don't know if its original or not. http://www.radiomuseum.org/r/philco_51_1730.html .