The octave quint which stands on the former harmonic flute slide is the old fifteenth, with five extra pipes at the bottom.
Tonally, the Victorian organs are robust, with at least two complete manual choruses and mainly quint mixtures.
The quint rank in the mixture is much too prominent.
In bell founding these partials have acquired their own names of hum tone, prime, tierce, quint, and nominal.
Quint is probably Robert Shaw's best role and certainly one of the most memorable movie characters - a crusty old eccentric who lives to kill sharks.