Hello all!
I'm new to Ebid and I'm in the process of setting up my shops.
I'd like to share this resource I found online in my seemingly never-ending search to identify my stamps and the postmarks they bear.
This is a PDF version of "The History of the Postmarks of the British Isles" which was published by Stanley Gibbons in 1909. The linked site is Cornel University and they state it was donated to the University and is apparently copyright free.
The book describes the development of early postmarks in the UK and in the appendices, towards the end of the book, there is what seems to be a complete list of the obliteration mark numbers and their towns.
For example, I now know that my SG 93 4d Vermillion stamp bearing the postmark number 447, was posted in Leeds, Yorkshire.
I have shortened the link as the original one is huge:
https://bit.ly/3jN058R
Anyway, I hope GB stamp collectors and sellers may find this useful.