Help identifying an authentic Nextion

[VK3KYY]

I bought a Nextion 2.4 inch screen from a vendor on eBay, and although it seems to work, I'm not convinced its genuine

It has a Nextion logo on it, and the part number starts with NX, but it does not have the ITEAD logo which other authentic Nextion boards used to have on them.

Can anyone tell me whether the authentic Nextion boards still have ITEAD on the back of the PCB, or whether the ones with the word Nextion and a graphic (of three parallelograms) is authentic?

[KE0FHS]

Photos on the official website show the ITEAD logo.
Enhanced 2.4" https://www.itead.cc/nextion-nx3224k024.html
Basic 2.4" https://www.itead.cc/nextion-nx3224t024.html

[VK3KYY]

I contacted the vendor, and their response was.

Dear friend, Pls don't worry, The item be made from different time, It won't effect using

It does seem to work if I upload via an old SD card, but I can't connect via USB serial to the PC, as that has stopped working.
(I think there is fault on the Serial Tx line from the Nextion, but the Serial Rx must be working as its displaying data when connected to the PiStar)

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