Got the part, finally. It is not OEM, it is a reproduction copy. The white color is slightly off from the original Apple part. Not as bright and warm white. It doesn't say Apple anywhere on it.
They also advertise a repro part, but I paid 15euro more for the oem. I would guess that they ran out of white OEM parts, like everyone else in the world, and slipped me a gyp. Most people wouldn't see the difference in color or care. I don't care about the color, but I want a genuine Retina display.
Also, they did not include the laser cut double sided tape for reassembly as they promised.
We'll see how responsive they are to correct it or refund. I am not hoping for much. Meanwhile, my kid wants his toy back and it's going on a month since he broke it.