[Hugh]

Here's a few more types of Columbia single impression machine cancels.

Whitney 10/70
Single circle town die (London W) with seven straight bars
LONDON. W
APL 28 / 12 15. PM / 1905

   

Whitney 10/83
Three line town die (lines above and below) with six straight bars and die number between 3rd and 4th line / [Newcastle-on-Tyne] No. 1
NEWCASTLE / ON-TYNE / 10. PM / APR 1? 04

   

Whitney 10/88
Three line town die (no line above and below) with six straight bars and die number between 3rd and 4th line / [Bristol] No. 1
BRISTOL / 4.45 PM / MAY 15 06

   

Whitney 10/86
Three line town die (no lines above and below) with six straight bars (no die number)
HULL / 1. 30 PM / AUG ? 06 A

   

Whitney 10/86
Three line town die (no lines above or below) with six straight bars (no die number) 
LEEDS / 9.  PM / AUG 21 11 A