Watch List notes:

One Pound Page QE2 pictorial & Sir Isaac Newton B339a Green Experimental issue 1978 serial number 81R 932436, UNC and Exceptionally Rare and very seldom offered especially in this high grade. These experimental issues had prefixes 81 or 82 which is outside the normal range as regular issues were only going up to 80

Estimate: 120-200 GBP