Anyone Have A Clue? People's Republic Of China Souvenir Sheet

I received a whole load of stamps from a Hipstamp dealer and... wow, did he screw up. Of the 8 souvenir sheets I ordered, he sent 4, and one wasn't even close to what I ordered. Instead, he sent this in its place and I am having a heck of a time figuring out what it is. It's got images from the 2012 Red Footprints series, but this specific souvenir sheet isn't to be found anywhere. I looked on that website you're not allowed to mention, Stamp World, in the physical Scott catalog, online image searches, etc. The only place it came up was a very unhelpful listing from Alibaba. The dealer listing for this sheet doesn't know what it is, it's just listed as "?".

I'm going to try to send it back, but I wanted to help him out a little by giving him some actual information. Anyone have a clue?

This sheet (personalized stamps ?) is on sale here :
https://www.delcampe.net/en_GB/coll...0607883.html

Cephu,s

I am not sure if this is of any help. Reviewing Sc 3911 it refers the user to a note after Sc 3187. Reviewing the note, it states dozens of stamps were reissued with labels in sheets none of which had any or minimal info released on them when issued. They were of course sold for prices significantly above face. I think this S/S falls under that category. I saw them for sale on three sites in China all for approx a dollar so they have not held their valley we.

Hi, the 4 stamps in the center of the sheet are called individualized stamps. The China national philatelic corporation issues the original ones in a pair (one of which is a label and has no face value). The local post office can print in any format they want with the customized designs. I guess the one shown here is just one of such. You won't see them in any catalogs since they are random and too many kinds. But China national philatelic corporation is also crazy now issuing some customized designs for some individualized stamps, but they usually carries a unique serial number on it to differentiate it from the random local printings (see attached photo). I don't see any numbers on sheet and hence I guess it was a local post office issue. I don't like these sheets as there is no new stamp issued and the old stamps are re-arranged in a sheet.

Finally - I have it!
Issued, in 2011 (May 21) under name of "Emblem of Communist Party", it is used for "Personalized Stamps" - service that many countries have in offer.
No main catalog/s will list it, as it is impossible to follow who, when, qty, etc. have print.
On China catalog web site, I see it under catalog number Z21, in different margin design and on sheet of 6 option, but central stamp are same as You show us.
They have it (sheet of 6) in nice affordable price of 4.00 US$ (+postage), but they have it in FULL SHEET option, but without photo and description how many stamps on full sheet), again in affordable price of 10.00 US$.
Single stamps, without margins offered for 1.00 US$.
I can not show You picture, as they block "download" picture option, but can provide You with web link, on request.