This is indeed a Prima. I bought it from a local store in San Diego which also happens to be an eBay seller.
Took heed of the advise here to never buy a cheap DB from someone I can't punch in the face. While I was at the store I picked the one that needed the least amount of work to be brought up to snuff action wise and in a low key color. Not implying that the store had a bunch of bad basses but it appeared that they just pull basses out of the box and string them up.
Speaking of set up, with patience, restraint and the confidence brought by the adjustable bridge I was able to get the action down to 7-8mm on the D,A and G. I couldn't get the E lower than 12mm because it turned out that the nut is lower on that side (it looks like the string will touch the board at "F" if I went lower) and replacing a nut is beyond my capabilities. Anyway, it feels good to me now!
Here it is (finally) at home with a toybass. Whew! Much respect to those of you who earned their chops on these things! It's very demanding to play.
My wife just shakes her head.