this series is essential on so many levels. serves as a history of dub, each box following a theme, as a great source for many out of press albums, and also is financially advantageous, works out at £2.50 - £4 per disc. buy the complete series gives you a collection of 32 albums for an outlay betweeen £80 and £100, depending.
the contents of this set (all in replica cardboard sleeves) is about the best one stop (one drop) introduction to the early work of king tubby, and contains many of his classic pieces (african roots, dub of a woman, etc, etc,) on 4 legendary albums. really, the only starting place for a project of this magnitude.
i cannot speak highly enough about this starting point (and the series as a whole), being both illustrative of the dub phenomenon, and featuring such excellent examples of the genre. much kudos to vp/greensleeves.