Ampico spinets are not all the same.  Many, such as the one on eBay,
have 'A' expression with 'B'-style valve blocks.  The spool box is
basically an 'A'-style drawer with wind motor.  Some have one crescendo
pneumatic.

The larger uprights can be found with full expression but still all
'A' parts.  The Studio model can be found with full 'A' expression,
'B' valves, and 'A'-style drawer.  I have never seen one with electric
roll drive but as soon as I say they didn't make one with electric roll
drive one will show up.

And as always I am looking for Seeburg H rolls.

Don Teach - Shreveport Music Co.
Shreveport, Louisiana