Underpaid, surcharged - postage due

Underpaid mail was assumed to be posted at 2nd class rates and usually surcharged accordingly although sometimes, as now, it escaped detection.

Stamped with a 1d Machin, and therefore surcharged at (4d-1d) x 2 - with 6d postage due (1970) (although from the manuscript marking they obviously had to think twice about it!)


Unpaid, surcharged 8d but not always with postage due stamps applied. (1967 & 1970) (The one with the dues is actually before the two-tier system)



Underpaid - 1d Machin treated as 2nd class, 2d Wilding treated as 1st class. (1st class mail had the time above the date, 2nd class has no time shown.) The 1d Machin might have been seen as a 4d brown, although the 4d red had been in use for over a year. Both these 1970.