Watch List notes:

The Portland Collection, British Coins, George IV, Maundy set, 1829, laur. head l., rev. crowned value within wreath (S.3816), all certified and graded by NGC, the fourpence and threepence as Mint State 67, the twopence and penny as Mint State 66 (4)
The fourpence the only example in this grade and the highest graded example.
The threepence the only example in this grade, none are graded higher.
The twopence the only example in this grade, none are graded higher.
The penny one of only two in this grade, none are graded higher.