Doug

Not saying yours is fake. There were several styles of the Pineapple grenade, all marked different. You would have to investigate.
Some were solid bottoms that were drilled. Some were plug bottom that had a hole with threads.
Yours could be original. The spoon looks repo, never say one shaped like that. Could be a odd fuse, or spoon replace.
The one pictured in your article post looks fine, and they are bringing $300 - $400 and up, ???
I have two, both repos with original fuses , inert, and all hardware.
Ed