Always had a big soft spot for the SB Special II, owned a black one from '84 in the late 80's, 'til I stupidly part-exed it for an Encore Strat in the early 90's (shut up, I know! ). Always regretted that. I did however end up getting an '82 Westone Thunder 1A not long after.
Managed to find another one around 2006, but life hadn't been too kind to it. It was still a nice bass, but nowhere near as nice as my original one. Bizarrely, that one was an '84 model as well.
In all my research around the time, I could never find any info on the SB Special II, only the RSB Deluxe. From what I can gather, they were only made in 1984, as I've never seen one from any other year.
No doubt, @Fionn's and @FlatEric's ones will be from other years. 🙄