Two Anneessens specifications I have seen, one being Bridlington Priory, the other from St Patrick's Catholic Church, Sydney, (The last remains of this 3-manual instrument were unfortunately pulled out a couple of years ago.) both contained as their pedal reed, the stop 'Contra Tuba'. The Victorian solo reed instantly springs to mind though I seriously doubt this as the case for Anneessens.
Is it essentially a French Bombarde or as was previously mentioned, closer to the German style?
Thanks
James Goldrick