I bought this Sears Silvertone Neutrodyne radio several years ago but I was also looking for a Rola Recreator loud speaker. A friend of mine got one for me at the August 2022 ARCI Swap Meet.
i agree with your decision to not possibly damage the unit by taking it apart; it works quite impressively as is. What a beautiful example of a battery set.
I have a Rola Recreator that I fit a 3" quality speaker and a bluetooth mini receiver into. Sounds pretty good. The speaker cone has a knurled metal flange on the bottom, you unscrew the flange from the lower can that is attached to the base. You can only access the speaker by unscrewing that speaker flange. My retrofit has the 3" speaker in the can and the blutooth in the base.
Hi Don. No it isn't built that way. All the internal components are attached to the front plate with screws. To take the chassis out intact you have to slide the entire face plate and attached components up and out of the box. You can't do that because the wood pieces are all glued in place.