Ikea Jonisk Design: Carl Öjerstam

Hello dear Ikea friends,

I bought the above-mentioned lamp today at a flea market.
Unfortunately, the light bulb or the bulb, if present at all, is defective.
Can someone give me a tip on how to open the lamp?
Thank you very much for your help!

Hello,
that should help:

Ikea.com/de/de/assembly_instructions/jonisk-stand-tischleuchte__AA-96164-1_pub.PDF

Thank you... the thing just simply got "jammed" Opened it somehow with a screwdriver and pliers. Everything wonderful.