Watch List notes:

Shilling 1816 S over sideways S in PENSE, CGS type SH.G3.1816.06, the only example thus far recorded by the CGS Population Report (at the time of writing, over 50 1816 Shillings have been recorded of the standard type) EF, slabbed and graded CGS 60

Estimate: 40-80 GBP