Recently purchased what appears to be an SB315 from 2000. One of the cheapest basses I've bought but one of the best. A very fine bass indeed. It's had a deep clean, scrubbed the finger board and oiled it, new strings and a setup. Plays beautifully now.
Interesting to read an earlier comment that said preamps were not always the best. This is very underpowered so that will probably be up for renewal. Earlier poster said he had a Bartolini in on of his. Fancy that for this.
Here's some pics together with my refurbished SB301 which has been shown here before.