Information provided by Richard M. Schneider based on a personal inspection and photographs of the instrument. GREAT - unenclosed, 54 notes (knobs each labeled 1M) 8' Principal 8' Melodia 8' Gamba 4' Octave 4' Flote 2-2/3' Quinte 2' Octave Mixtur 3 fach Manual Coppel SWELL - enclosed and expressive, 54 notes (knobs each labeled 2M) 16' Bourdon Bass 16' Bourdon Discant 8' Principal 8' Gedackt 8' Salicional 4' Flote 2' Flautino PEDAL - unenclosed, 25 notes 16' Sub-Bass 8' Octave Bass 1M Pedal Coppel 2M Pedal Coppel Note the original builder's label indicates only Pfeffer & Son - St. Louis MO. It does not indicate J.G. Pfeffer. [Received from Shawn P. Keith 2014-02-12.]