As mentioned in another review (Dezpoina on 24/01/2023) and helped me A LOT, since it was not mentioned in the product description, the handle fits the Vitavit pressure cooker with the blue flowers (1994) but it is black and not blue (if anyone is interested in that).
It came in a Fissler bag.

Well, no matter how much we try, you can't find such quality anymore in an era where everything is disposable and there are no spare parts available. It fits like a glove to the Fissler that we have had for 35 years; the one with the blue flowers. Perfect.