This series of twelve colour aquatints are considered by many to be Daniell's greatest achievement as an artist and engraver. There are two sets in the Royal Library at Windsor Castle, and another at the Victoria and Albert Museum. Similar to the set sold here, the series at Windsor and the V&A were apparently issued without the usual imprint and publication line and inscribed in pencil so as to resemble watercolours.
Despite the lack of imprint, it is possible to date the series with some certainty to between 1826 and 1830. One plate at Windsor bears an inscription 'To/His most excellent Majesty/the king/these select views of Windsor Castle/and the adjacent scenery/are, with gracious permission dedicated/by his Majesty's faithfull subject & servant/William Daniell, R.A./London, published by Mr W. Daniell/14 Russell Place, Fitzroy Square/and Moon, Boys & Graves, 6 Pall Mall.'
We know that Daniell was not known to use the Russell Place address until at least 1826, and differences in the height of the Round Tower depicted in the plates (the building of the top storey of the tower was completed in 1830) would seem to suggest that the series was executed between 1826 and 1830 and published thereafter.