I suspect those are model numbers, not mfr's name
They don't ring any bells with me...I've put out an SOS to someone who'll prob'ly know. It's most likely a mfr that's been out of business for 20 years. Or, it may be that an early PO figured out how to turn a manual into an electric by adding a motor that replaces the pump handle (the same thing as a Raritan PHE II...which I don't recommend!). Can you email me a photo of it--a good view of the PUMP assembly, not the bowl (everybody takes great pictures of bowls, but all bowls look alike)? I may be able to ID it from that.However...it's unlikely that any parts are still available for any toilet that old. But even if you could find any, IMO, it's time to bite the bullet and spring for a new one. For one thing, electric toilets made today use about 1/3 the flush water and less than half the power the ones of that vintage do. For another, even if you can find a motor that'll work, the rest of the pump assembly has to be so worn by now that you'll prob'ly just be throwing good money after bad...several times--and then have to buy a new one anyway.Everything has a lifespan, and 27 years is a LONG run for any marine toilet. I suggest you check out the Raritan SeaEra...available in both sea water and pressurized flush water versions. About $350 (which isn't much more than a new motor--IF you can find one--for yours will cost you). Let's figure out what you have...then go from there.