Perforations: Good perf means almost equal perfs on both sides and if there is no trace of a perf I describe it as trimmed straight. Just OK means that in my opinion there are sufficient perforations, do ask for a scan if it is important to you. Hopefully any other descriptions are clear as being between these descriptions.
QEII - Machin Booklets - 50p Folded
50p Aircraft No 2. Viscount and Comet. Phosphor shift
booklet FB56 pane WP797. Phosphor shift to right and down.
50p Aircraft No 2. Viscount and Comet. Cover flaw
booklet FB56 pane WP797. Cover flaw with vapour trail from tail of comet. Left perfs trimmed straight.
50p Aircraft No 1. Armstrong and de Havilland. Cover fault.
booklet FB55 pane UMFB47. Cylinder pane B1 B3 trimed straight left. Cover fault.
50p Aircraft No 1. Armstrong and de Havilland.
booklet FB55 pane UMFB47. Good perfs.
50p Aircraft No 1. Armstrong and de Havilland. Phosphor error
booklet FB55 pane UMFB47.
50p Aircraft No 1. Armstrong and de Havilland. Perf Shift (2nd)
booklet FB55 pane UMFB47. Perf Shift to left.
50p Aircraft No 1. Armstrong and de Havilland. Perf Shift
booklet FB53 pane UMFB47. Perf Shift to left.
50p Botanical Gardens No 3 Lillum. Error Orange cover.
booklet FB45a pane UMFB41. Quite different from the normal shades seen. Correct spelling "Mount Stewart". Imperf.
50p Gilbert and Sullivan No 3. Mikado. Perf "Type P"
booklet FB53 pane UMFB46. Perfs good.
50p Gilbert and Sullivan No 3. Mikado
booklet FB53 pane UMFB46. Short bands on bottom two stamps. Perfs just short on right.