ᐅ Ikea metal bed in gold/white: ball nut missing

Hello dear Ikea community,

I bought a used bed, among other things. Unfortunately, after the purchase, I realized that a "ball nut" was missing. To get this spare part, I need the name of the bed so that I can look for the assembly instructions and find out the item number.

Thank you in advance!
Best regards, André

SORRENTO
The chances are slim. The bed is over 20 years old.