If you are interested in signatures, please PM me. I can send you a couple links for .jpgs of a few documents that have just about the entire Cold-War high command on them! (I'd post the links here, but since the images are hosted, though not displayed, on my website, I can't legally do it!) Enjoy!
OK, came a bit earlire.
The documents are from early 50's. They are opinions on officers to be promoted.
The seller confused the names, so there's Koniev and Malinovskiy
Here's the first one (sorry for poor pics - will try later) - opinion on podpolkovnik of air force Aleksandr Wasilievich Korolev to be promoted to polkovnik. Signed by General-letenant Liubimov and confirmed by general-letenant Sakovnin and MSU Malinovskiy.from 1953
The document IS original - not sure about signature, but does not seem to be added later.
The second one:
Opinion on podpolkovnik of quatermaster service Yakov Avramovich Naboczenko to be promoted to polkovnik. signed by polkovnik Golovatyuk, confirmed by generał-letenant Nikolaev and marshal Koniev. From 1952.
As above, the document is original. The signature is either original or skillfuly forged - I have comparised it to foto of confirmed Koniev's signature and looks good.