Unfortunately, these are still pretty common and so not particularly valuable - certainly less than £30. The design was actually developed by TaylorMade and the Wilson bought the rights - these tend to be a little more desirable as it was a TM one that Faldo used to win the masters..
A lot of these about and even the 1A are pretty common - the real collector items are those stamped Slazenger and Nicklaus o the sole, so if you have one of these they can be worth a few hundred pounds
Hitting good irons, wedges and putting really nicely but losing 4 balls off the tee with driver/3 wood (9 holes!) - just have a real mental block when the ball is teed up, could go big left or big right, just so demoralising.
My family used them when we went to Lisbon last Summer - granted it was better in pedestrianised boulevards or the water side promenade (we didn't go on the road) - loads of space and no suggestion of any accidents/near misses. Very much part of the culture and i thought they were great.