The extremely large, cambered flange is original to this club. Both the head and the flange were made exceptionally thin so that the overall weight of the clubhead would be normal when compared to other irons. Original shaft and grip. Such thin surfaces would not make for a solid or stable iron when striking a ball. Don't expect to see many more of these.
This is the only such club known to the auctioneer, and is the very club pictured in TCA2 V1 page 323. A signed copy of the page will accompany the club.