I'm certainly no Gulbransen expert, but to get the ball rolling I'll
mention that Gulbransen made some Recordo rolls as documented in Ginny
Billings' Recordo discography (where have I heard that name before?  ;-)
which leads me to speculate that the fanciest automatically-played
Gulbransen piano was a Recordo, not an Ampico or Duo-Art or Welte (or
Artrio-Angelus or ... ).

I hope that helps.  Does anyone out there have an actual Gulbransen
Recordo piano?  Is that what they meant when they said Gulbransen
Registering Piano, or is that just a fancy name for some trademarked/
patented aspect of their everyday footpumper player piano?

Rob DeLand
deland_robert@macmail1.csg.mot.com