I wasn't real sure.... I've never seen a unit like it in person. looks to me like the C bowl is mounted sideways (pins horizontal) and then the trim unit adapts to that. I have no idea what it's worth, but I know the bowl and suction piece should be worth a few hundred. If anybody wants just the pump or just the trim unit, I can split it up. I have a source that is always looking for good suction pieces and bowls, so it's no big deal. I guess if somebody is restoring a period correct boat it might have some value.