The organ is the model 357 (mark one) electrone model built in around the late 1950s.

The specification reads:

PEDAL
Contra Bass 16'
Bourdon 16'
Echo Bass 16'
Octave 8'
Bass Flute 8'
Flute 4'
Trombone 16'
Trumpet 8'
Manual I to Pedal
Manual II to Pedal

MANUAL I
Bourdon 16'
Diapason 8'
Hohl Flute 8'
Gemshorn 8'
Octave 4'
Wald Flute 4'
Fifteenth 2'
Tromba 8'
Manual II to Manual I

MANUAL II
Contra Salicional 16'
Geigen Diapason 8'
Stopped Diapason 8'
Salicional 8'
Principal 4'
Stopped Flute 4'
Flautina 2'
Quartane II
Contra Fagotto 16'
Cornopean 8'
Clarinet 8'
Clarion 4'

GENERAL
Tremulant
1 balanced expression pedal - pedal and manual I
1 balanced expression pedal - manual II