Hello,
Is anyone in the Portland or Washington state (Amboy) area looking for a Sculler life saving cannon/gun? If so, send me a PM and I'll send you the link. It is not mine but, I came across it in a public classified. It has been slightly modified by the addition of wheels and copper coating but, it's no big deal. There are a couple of extra parts with it that do not belong (ie. cap square, elevating screw and worm head) but, they would be good for a future cannon project. Their asking price is fair at $1450 for what it is.
Since, this is not mine I will not post the listing link but, I'll post a reference photo for those who who may be interested.