Not sure if it is helpful or even of interest, but Beer Nouveau of Manchester produced a beer called Not Bass, which I am sure I recall reading was based on the original Bass recipe. I don't know how much of it they produced or even how easy it is to get hold of, but they often experiment with reviving historical recipes and making them as true to the original as possible. They have a brewery tap and are currently running it as an off licence, so you never know.