Main position dot is oval North East and South West slightly South of centre 1/2 on East or more.
Kershaw's notes
The LH oval guide dot is below the horizontal guide line
Morel's notes
In addition to the oval and guide dot, another feature of this position is a faint mark, in the white frame, just West-Southwest of the UL number 8. Position dot left of Cartier's head.
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.