Antique toilet, model Trent. A flat flusher with an AO at the rear bottom exit. The set is complete with the corresponding throne seat on supports. The antique toilet itself, dating from around 1900, is still in mostly good condition. A small hairline crack along the screw holes at the base but that will not hinder an installation. No visible breaks or hairline cracks.
A rare model because usually these toilets are decorated, in white/antique white we see them much less often and certainly not in this condition.