I wouldn't rate it either, I think it was rumoured that strummer/jones wrote some of tracks and had writing credits but I'm sure I read somewhere that they just helped with production. I purchased my copy in a WHSmith sale for 49pence (along with a reduced copy of Wilder) around 1982 thinking it to be a holy grail to clash fans, retrospectively I wish I'd bought an extra copy of Wilder.
Buck