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 Pillar Box. Phosphor error
booklet FB38 pane UMFB34. Perfs just OK.
50p Aircraft No 1. Armstrong and de Havilland. Perf Shift (2nd)
booklet FB55 pane UMFB47. Perf Shift to left.
50p Pond Life No.1. Star underprint.
booklet FB32 pane UMFB38. Perfs good.
50p Aircraft No 1. Armstrong and de Havilland. Phosphor error
booklet FB55 pane UMFB47.
50p Pond Life No.2. FCP paper error, no Underprint.
booklet FB33a pane UMFB39a. Perfs trimmed left.
50p Aircraft No 1. Armstrong and de Havilland.
booklet FB55 pane UMFB47. Good perfs.
50p Roman Britain No 1 Hadrians Wall.
booklet FB35 pane UMFB39. Perfs good.
50p Aircraft No 1. Armstrong and de Havilland. Cover fault.
booklet FB55 pane UMFB47. Cylinder pane B1 B3 trimed straight left. Cover fault.
50p Pond Life No.4. New phosphor ink.
booklet FB36 pane UMFB40a. Perfs just OK. 1p is a very pale shade, hence price.
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.