 Two further campaigns, or phases of decoration, can be seen, the last work being of near the mid-century.The art historian Georges Hulin de Loo distinguished the work of eleven artists – "Hand A" to "Hand K" – in the work.By this stage the manuscript appears to have been owned by, or at least was at the court of, Philip the Good, Duke of Burgundy – another argument for the involvement of Jan van Eyck who moved from the employment of the counts of Holland to the court of Burgundy, apparently taking the work with him.