[OldRestorer]

I am looking for a 37-650 chassis & speaker and someone has offered a restored 37-660 instead.

Does anyone know if the holes are the same.

Thanks,
 Kirk

[morzh]

One is 8-tube and 3-band, the other is 9-tube and 4-band.
They used the same cabinet for the tabletops. so the holes should be the same.

[Ron Ramirez]

The 37-660 chassis will fit inside a 37-650 cabinet,

BUT...

You would need a different escutcheon with a larger opening.

The 37-650 is a three-band set while the 37-660 is a four band set. Larger dial scale, needing an escutcheon with a larger opening for the dial.

https://philcoradio.com/gallery2/1937a/#Model_37-650B

https://philcoradio.com/gallery2/1937a/#Model_37-660B

[OldRestorer]

Thank you both!