[Ron Ramirez]

The original speaker used was S-16 per the "Philco Speakers" file available here on this website (which Terry also linked to in post #3 above). Remember, the radio being discussed is a 37-89B, not an 89B which is a very different animal.

Anyway, the S-16 speaker has an 1140 ohm field coil, and appears to be the same as the S-7 speaker which would be easier to find since it was used in several models between 1933 and 1938.

Regarding the oscillator coil, you are likely stuck with either finding one from a junk 37-89 or 38-89 set, or using one of those "universal" oscillator coils such as this one from Antique Electronic Supply. The problem is, if you go that route, you will only have an AM radio and your band 2 will be dead.

Winding data was never published by the manufacturer.

37-89 and 38-89 sets come up for sale fairly frequently on the auction site, including just chassis. Be careful and don't pay too much, though. A fair price for a parts chassis for one of these is around $20 to $50. Those who ask $100 or more are living in Fantasyland.