What I did not mention in the previous post is that the leaf at Sotheby's has been catalogued by Mara Hofmann for sale in their 5 July auction; she recognised it as being Spanish, and contacted Josefina Planas Badenas, who pointed out that such border designs were particularly popular in Toledo around the turn of the century (cf. her ‘Bernardino de Canderroa y la iluminación del libro’, Rivista di Storia della Miniatura, 19, 2015, pp.131-50).
Anne also sent me scans of an annotated copy of the 1910 Lanna catalogue:
The subsequent provenance of the Margaret leaf is currently unknown, but after 1910 the Amsterdam leaf was owned by the Princes of Liechtenstein at Schloss Vaduz, and was bought by the Rijksprentenkabinet, in 1948, through Cassirer, Zürich.
But both leaves have one feature in common that I do not remember ever having seen before. In high-class manuscripts from the 13th century onwards one occasionally finds that there is ruling to guide not only the bottoms, but also the tops of the minims. Here is an example from the so-called Whitby Psalter at Harvard:
|Houghton Library, MS. Lat. 394|