Raritan Macerator (for RV toilet or Marine head), I believe it is rebuildable and will sell it cheap: $20, you pay shipping.
I also have two (2) Marine or RV Porcelain toilet bowls. 5" round base, 4 bolt hole pattern, 8 1/2" tall and outer rim is 13" I see these online for $50+ used. Mine are in excellent shape, no cracks, or chips visible. $20 each, you pay shipping. I will try and attach pics.
BTW, hello everybody, I used to be active on this forum years ago. My blue stripe baby is the "Little Debbie" way down here in Dixie, Lake Eufaula to be exact. She is a 1974 28' Express converted to Salon, single screw Lm318. Fresh water boat soon up for sale!