I prefer his old full signature before the new squiggle. There is not a whole lot to go after when you try to authenticate this kind of autograph.
It will come down to the reputation of the seller if you feel comfortable or not to buy it.
Thank you for commenting for me. I questioned the seller on numerous occasions swears it is real cause 'they only have originals". I too would prefer a written out signature but wasn't sure what it would look like genuinely.
Hi Bjarne, I have posted a second Steve Winwood. Can you check it out and tell me because I want to buy it but only if it passes here. Can you possibly post examples here Bjarne?