Qe II Silver Jubilee GB Souvenir Sheets?

OK these are defeating me.

Are they Postage? They say that they are valid for Postage but are not listed as such.

Are they Souvenir Sheets? They say they are but do not really appear to be and also do not appear to be gummed though they all have serial numbers (different) on the reverse.

Are they Postal Staionery? Certainly not envelopes and if a card, there is nowhere for a message or address.

Can anyone give me the story on these?

These are private productions.

I'm not sure how there were produced but they could have been printed on cut-down Post Office envelopes or printed and then stamped to order by the Post Office.

My first guess was that they were printed and stamped to order but I don't see any record of these two values and dies being used that way.

This suggests to me that they were printed on cut-down Post Office postal stationery envelopes.

I've seen similar items relating to other events and I'd be interested to learn which enterprising dealer produced them.

Intriguing! Particularily if the Post Office was directly involved.

Perhaps this information will help at least in determining the printing sequence. As I said, the sheets are numbered on the reverse and the two types of serial numbers are shown here.

The paper is of a pale greenish cast which doesn't show up in these scans. It's high quality, laid paper I think, with the laid lines visible running horizontal to the stamp impression. There is also a vertical laid line every 2.8 cm. That should at least clear up whether or not they came from the same paper stock as envelopes.




They were in the same batch of material as these two sheets which are printed with Stamp reproductions in black, not valid for postage.
These two are labelled in red (which, for some reason, seems to show as purple in these scans) "Queen's Silver Jubilee Appeal" and are further impressed with either the Exhibition Logo, London, or the Amphilex Logo, Amsterdam.







Would the whole lot be called Cinderella Issues?

The last two are Cinderellas and are two of a large number of GB Blackprints produced [mainly by Harrison & Sons] between 1976 and 1979. Some, like your example, appear in different formats.

The earlier sheets containing Machin Octagonals, are Postally Valid and therefore not Cinderellas. These can be found on FDC's and with Specimen Overprints. I am of the opinion, that they are connected to GB dealer Rushstamps [to answer Nigel's query] as they always seem to have good stocks.
The same dealer is known to have produced other 'Philatelic' items like Boots Label Panes overprinted in the margins [for which no Post Office permission is needed].
The items are however, attractive. Yours truly collects the Boots Panes as part of the Exhibition collection !

Londonbus1

I believe the top three are from a set of 4 issued and are not connected the bottom 4.
The last 4 are issued for Amphilex in Amsterdam,Holland and show the name of the designer on each sheet.
Can you let us know the name, it's quite clear on the Flag Sheet.

Londonbus1....did someone say Flags ?