1951-54 ½d to 1s, set of 5 unique vertical marginal Registration blocks spanning the sheet

Each block with a printed Registration Certificate on the reverse with manuscript entries, the ½d reading:

“THIS sheet (240 set) of Postage Due ½^d WAS TAKEN IN THE PRESENCE OF THE POST OFFICE CONTROL OFFICER AT THE FACTORY OF Messrs Harrison and Sons Ltd AT High Wycombe, Bucks., FOR REGISTRATION OF THE FIRST PRINT OF this denomination in orange.

(Signed) E. Carr
CHIEF EXECUTIVE OFFICER
19^th July 1951

(Initialled) HWP
INITIALS OF THE CONTROL OFFICER
SUPPLIES DEPARTMENT
STAMP DEPOT”

The other blocks with the same Registration Certificate and dates as follows:

1d             ‘19^th July 1951’
1½d          ‘25^th January 1952’
4d             ‘7^th June 1951’
1s             ‘7^th June 1951’