Terry Smythe asks about dual disk Porter Music Boxes.

Yes, they do exist.  Somewhere around the house we have an old cassette, 
purchased over 10 years ago, of the dual disc Porter.  They are two 15 
1/2 inch discs.  The box gives off a magnificent sound.  I haven't seen a 
price on one lately, but back in the 1980s, one could buy about three 
very nice Regina 15 1/2" boxes in restored condition for what the dual 
disc Porter would cost.  But that dual disc sound is something to behold!

Bob Ebert