Watch List notes:

The Portland Collection, British Coins, George III, Maundy set, 1820, laur. head r., rev. crowned mark of value (S.3792), all certified and graded by NGC, the fourpence as Mint State 66+, the threepence as Mint State 67, the twopence as Mint State 67, the penny as Mint State 66 (4)
Erroneously attributed by NGC to the Bridgewater House Collection, nevertheless, this is a spectacular set.