previous owner had this with the spares that we found on-board.
Included is a Seagull IV filter housing, the ceramic disc valve top mounted faucet, installation hoses, bracket and screws for holding filter, original filter (unused to my knowledge, but not sealed) and a new, sealed filter.
Best I can tell this is the same as the Seagull IV X-1F kit that retails for about $630 plus an additional $100 cartridge.
The filter housing itself has some surface dirt and some light corrosion that I'm sure will come right off.
Asking $250 plus shipping for everything.
I live in Chicago and boat in Racine, WI, so I can arrange to meet locally anywhere between.