However in the 70's I think there was a marketing deal with Slazenger to produce clubs with his name on. They had a similar deal with Hogan.
In their day these would have been a good club but a mass produced one. I remember seeing them in a Slazenger brochure I had when I was a kid. I doubt if they are worth much now. In those days (early 70s) Slazenger had Nicklaus, Hogan and... wait for it... Peter Allis branded clubs (my bro in law had a set of these). I'll let you guys work out which one was the bottom of the range .
Even some of the classic MacGregor blades bearing Jack's name don't fetch much unless they are in mint condition. They might have some novelty value but that's about it I think. I have seen some lovely vintage sets like Nicoll Henry Cottons fail to sell on e-bay and they would in my view be much more desireable
Apparently the one to look out for is the Slazenger branded, PING putter bearing Jack's name. They made these when Karsten Solheim first started the PING brand and Jack used one briefly but because of the Slazenger deal they carried the Slazenger name in this country. I understand they can fetch a few bob.
There may be others who know more about this so happy to be corrected if my understanding is wrong.