Watch List notes:

Sovereign 1843 3 over inverted 2:- Note: the 8 4 3 are evenly spaced, the 1 and 8 showing signs of doubling. The underlying 2 shows at the top right of the horizontal stroke and between the downward stroke and ball of the 3. (visible under 10x magnification) slabbed and graded CGS 65, one of only two examples thus far recorded on the CGS Population Report, this being the finest

Estimate: 600-900 GBP