Lot #99 Canada McCann #BK69am-ap 1c Purple Brown, 6c Black, And 8c Slate, 1967-1973 Centennial Issue, A Specialized Lot of Four 25c Booklets, Type 3 Covers Clear Sealing Strip, DF, LF-fl, MF-fl, and HF-fl Papers, Various Settings, 3 mm OP-2 Tagging

An interesting group of four complete 25c booklets, each containing a pane of 6 of the 1c purple brown Northern Lights and Dogsled Team, 6c black Trasportation and 8c slate Parliamentary Library stamps from the 1967-1973 Centennial issue, with type 3 "free dispenser" and "pre stamped" covers that have a clear sealing strip. Printed on nearly all listed papers: DF ribbed, LF-fl ribbed, MF-fl smooth, and HF-fl smooth. All three plate settings, A, B and C are represented.

Although Unitrade, McCann and Harris list LF, MF, HF and HB papers, there are several variations of each type. All give a bluish to bluish white glow under UV, but the papers contain different concentratons of LF, MF, and HF fibres, which make the paper appear brighter. HB covers 4 levels of brightness on the 12 point Freeman-Irwin scale, starting at 9 out of 12. Most HB booklets of this issue are 9 or 10 on that scale. Some of the papers are smooth, while others display light vertical ribbing on the printed surface. The different settings are discussed in Harris, as described by Leopold Beaudet and there are three: Setting A has the lower left corner of the 1c stamp at 2/2 located well to the right of the upper left corner of the bottom 8c at 3/2. Setting B is similar, but this time the corner of the 1c is just barely to the right of the 8c, and on setting C the corner of the 1c is to the left of the corner of the 8c.

The 1c booklet stamps printed by BABN were printed in at least two shades:

• The 1c stamps are found in purple brown and violet brown shades.

The gum used on these booklets is a white PVA with a satin sheen.

Unitrade values these booklets at $11, counting them as basic varieties. The booklets are all fine and VF, grading between 70 and 80.