Here we have St Paul`s Cathedral - and a curious tale...
You see our set was issued by Hignett in December 1909, but it was later issued by W.A. & A.C. Churchman, a lot later, in November 1924, and, more than that, Churchman`s version was what our reference books call "unicoloured", an entirely different colourway, a dark sepia, almost black and white. Sadly there was never a reference book to the Hignett issues, but there was one to the Churchman ones, from which we learn that their version was printed by Mardon, Son and Hall, so that leaves us with two options - the same printer did both versions, or that Mardon, Son and Hall either bought the artwork or copied the cards.and found it easier to reproduce them as monotones.
In my view, the Churchman pictures are sharper than the Hignett ones, and the position of the picture is slightly altered. That casts doubt on them being straight copies from the cards, but it does suggest that Churchman perhaps got hold of the original drawings.
In addition the reverses are noted to be "different numbers, but same text, revised". I think that is slightly misleading, because the Hignett version has a much more decorative design around the text, and the text has just been moved to fit the greater space.
But one day I will get the time to research all the cards and compare them.....