[Texasrocker]

Hello Radiorich.
Have you tried subbing any regular loop antennas from other sets as I suggested before in your initial post?

If not, heres another suggestion. If I remember correctly, those model orig antennas werent very massive in size at all.
You could try making your own substitute to get the set receiving again if you have a ohmmeter.

Try this idea,:... find a small cardboard box that resembles a old vintage cigar-box. Use some # 18 guage single-strand wire with outside jacket to wrap around the skinny-sides of the box. Lets say, approx 8" x 5" type sturdy box.

Punch a hole thru both -sides of one corner, and feed the insulated wire thru the starting-winding hole. Take your trusty ohmmeter, set it on ohms,connect one meter lead via alligator clip to the wire ( starter end) corner of box ( winding starting point) and reel off enough wire to read ( approx 3.6 ohms). Cut the wire where you get 3.6 ohms ( can inject a sewing-needle thru the wires outer jacket,connected to other ohmmeter lead to get proper-length of wire to measure 3.6 ohms total. Then, wrap the remaining wire ( 3.6 ohms in length) around the box, and terminate the wires end on the same corner of box where you started the winding.
Attach one end of your homebrew antenna wire to the appropriate connection on the radios tuning-capacitor. The other end of your homebrew antenna-loop terminates to the radios chassis with a 5 mmf mica cap in series with a 150K 1/4 watt resistor.
If you want the set all "original", ebay would be your best-bet to find a exact replacement off a unrestored set of the same model number(s) you mentioned. Just tryin to help with ideas!
Best of luck on your Philco restoration!!