London Stamp Exhibition Sheets No Scott #s?

I could not find where these are listed with Scott numbers and do not have Michel catalogs. Can someone please assist with identification? I have two others from 1972 and 1979 but could not get image optimizer to accept them for some reason.
Thanks always for you excellent feedback.
Paul

As far as I know, these are souvenir cards or covers from stamp exhibitions.Only the third one (from 1974) could be used for postage. You won't find them on any std stamp catalog, neither Scott, Miche, Sg... The third item can be found perhaps on a British stationery catalog.
The two first, in my view, could be considered, really as "cinderellas".

I think that there's a catalog of British stamp exhibion cinderellas and souvenirs.

I have a feeling both these items are listed in the "Dummy Stamps" catalogues, the webmaster sometimes posts here.
Try Googling with text strings dummy stamps, and the sheet text.

Here she is............


http://www.gbps.org.uk/information/...%202010).pdf

http://www.gbps.org.uk/information/...%202018).pdf

The link to the latest edition which includes ephemera and other goodies. The catalogue is in three parts.

http://www.gbps.org.uk/information/...%202018).pdf

http://www.gbps.org.uk/information/...%202018).pdf

The links above are for Part 2 and Booklets.

Londonbus1 thanks for promoting the free ebooks produced by myself and Graham Wilson. At the risk of boasting, they won a Gold and Best in (digital) Class at Italia 2018 last November, along with a Large Vermeil medal at London's Stampex 2018. GLENN

Congrats Glenn and Graham ! Fully deserving of the awards.