Dan Armstrong writes:  "I'm planning on restoring it to original,
possibly minus the tube-type amplifiers.  They may be replaced with
solid state since vacuum tubes are difficult to come by."

Vacuum tubes (= valves in UK), with just a few exceptions, are *not*
difficult to obtain.  There are several specialist suppliers in the UK
and there must be some in the US.  Try the Antique Wireless Association
web site.  A few types, either exotic or unreliable, such as PX25 and
UL41 are more expensive than you might expect and a very few types are
like hen's teeth.  Age is not a major factor; many pre-war types are
readily available, some post-war types can be scarce.

Vacuum tubes are a *lot* more reliable than you might imagine.  The old
electrolytic capacitors are the least reliable parts followed by high
value resistors.

Jeffrey Borinsky

 [ The musician's mail-order stores sell vacuum tubes for the old
 [ amplifiers beloved by many musicians.  Ask at a big music store,
 [ and inquire about a competent shop to rebuild your old amplifier.
 [ The capacitors aren't terribly expensive, and Jeffrey is right --
 [ they _must_ be replaced.  Then you will appreciate the sound of the
 [ old tube amp as guitarists do; it's smooooth!  -- Robbie