1958 Soren Georg Jensen rocking chair  

Hi,
I would be grateful for any information regarding a Soren Georg Jensen rocking chair. It has been much touted, that the chair was designed for Jensen's Kubus production, or the Tonder company.
However,I have an example, which allegedly pre-dates mass-production, from the wood-working atelier of Georg Jensen. The rockers, are stamped with the initials PK, consistent with craftsman production.
The chair is NOT a repro, and whilst the fabric is consistent with Kubus production, Kubus pieces normally carry an adhesive label.
Is my chair, as others have suggested, a very scarce early item??
I would be grateful for your opinions.
Thank you