Watch List notes:

Halfcrown 1866 Fair, weight 13.37 grammes, one of the 'missing' dates in the Young Head Halfcrown series, mentioned by way of footnote in ESC by Rayner in the 1969 edition who had heard of an example dated 1861 sold in a "Northern" auction in Fair in 1967 for £115. Reported as unrecorded in Royal Mint striking records, more recent opinion is that these are regarded as later forgeries struck around 1887-1890 from worn dies, as the head types are incorrect for the period

Estimate: 150-200 GBP