You're right about the clamp :o
Not really sure where in my brain that came from lol.
But yeah, a genuine should also have the markings at the bottom.
You can see why they do it though, take a £5 Chinese post, print Deore XT on it, charge £75
Edit - Just found this...
Anyone seen these reproduction XT seatposts before?
Apart from the clamp which should be silver metal, any other way to tell a fake from genuine?
Don't want to get burned especially when my size I'm looking for is usually around £100
EBay item - https://ebay.us/teyUVg