Guide line in the South margin near the South West corner; in clear copies there is a faint colour line near the top of the upright stroke of the 2nd "E" of "Seventeen; main position dot is oval North East and South West clearly South centre nearly full towards East.
Kershaw's notes
The oval guide dot is large with a strong guide dot outside the LL corner
Morel's notes
The oval guide dot is at 4 o'clock, just touching the inner oval line,There is a large dot under the 1 of the left 17, in the bottom margin, typical of the10th row positions.
Stamps from printing orders 1 to 5A were perf. 11.75, stamps from printing orders 5B to 7 were perf. 12 x 11.75 and those from printing orders 8 to 12 were perf. 12.