It is a officer blouse in the configuration of 41 but you should ask for better pictures .
I have asked.
The material looks ok to me, similar to a gymnasterka I've seen in the WW2 museum in Kyiv.
The four buttons down the front is unusual i think.
One of the examples in Shalito and Savchenkov's book looks like it might have 4 too (p29). I think there has been a discussion on this topic elsewhere.
Let me say that featured in a museum is not a guarantee of authenticity
I have the book that you are quoting, personally I do not take everything literally.
Expect new pictures but with this , I'm far from convinced
But museums, books and forums are all most of us have to go on!
Pending new pictures, what don't you like about this Gymnasterka?