Part 6135 (palm tree/Technic horn)

[Magnus Forsberg]

There's at least five different designs of this part.
https://www.bricklink.com/v2/catalog/cat...=2536a#T=C



This picture show only four, but there is also 2536e at Bricklink.
So maybe one of them looks like this and is correct?

And how about that partnumber, 2536? Where does it come from?