What can you add to a thematic collection of DW stamps?

There have been Clacks stamps issued for the pre-payment of clacks messages, which have been made available over here on three separate occasions. The first may be from the Reacher Gilt era of the Grand Trunk, while the others were certainly from after his demise.

Then there was an incident involving the Smoking Gnu and the appearance of some grafittiesque Patrician stamps. As we all know the group had a direct link to The Grand Trunk.

Finally there have been stamps where clacks towers appear on stamps because they are part of the scenery. A subset of these are where that clacks tower is involved with the sport of an issue. While I think I have found all those released so far, I may be wrong and you know better, and there is always the possibility of being able to add to these with stamps yet to come

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