Machin extravaganza in two cartons, almost entirely mint housed in nine binders plus three filing boxes of quadrille album pages with detailed write-up, the latter appearing intact with in-depth pages of varieties and errors, high values in blocks, etc. The other books similarly comprehensive for the values studied, with cylinder blocks (two vols), booklet panes (three vols), regional cylinder blocks (three volumes) and coils. Significant face value, certainly over £1,000. Accompanied by the British Decimal Stamp Study Circle GUIDEC publications in four volumes. Highly recommended lot for the definitive specialist.