The seller said it's from the ´60s and somehoe I believe her.
The box has original plastic sleeve in 100% condition, as are all of the items.

The pen has two "funny" things I've never run across before (well, I'm quite a newcommer what it comes to vintage fountain pens):
1. It's "piston filler" - but the piston is under a cap:

2. It came with a separate extension piece - to be used as "a desk pen" (if wanted) as the booklet included said.

The inkbottle is full, but I haven't yet tested how it writes.
Nib is medium and it has text "Senator iridium Germany" (wonder what "iridium" means...?)
Anyway, I think I've found a keeper!