Watch List notes:

Half Sovereign 1836 Marsh 412 GVF/VF or better Very Rare and rated R2 by Marsh, a key date in the series, all William IV Half Sovereigns difficult to obtain and all examples above Fine are particularly elusive, our archive database stretching back to 2003 reveals that we have only previously offered 4 examples

Estimate: 500-1000 GBP