On our website we show the publicity picture for the London Underground mixed retail booklet.
The background to the LU stamps is Harry Beck's London Underground map on the left, and the newer map on the right, with the cylinder numbers shown vertically at the right.
As we know we can't always rely on the pre-issue images - but as I received a pack containing no cylinder numbers at all, I still don't know whether the image is accurate or not. We can report that the year code is M12L and the source code MCIL.
Here are pictures of today's arrivals, which indicate that they were packed on 27 November:
GERMANT ~ Germany ATM FDC - Germany 2017 ATM FDC, posted on January 3, 2017 from Bonn to Taipei with arrival postmarked on January 19, 2017.