It must surely be from the same manuscript as a cutting offered at Christie's. 23 November 2010, lot 5:
Just as the recent Sotheby's catalogue was going to press, I realised that a full leaf from the same manuscript was sold at Sotheby's as the property of Eric Korner, 3 April 1957, lot 54:
|Image courtesy of the Indianapolis Museum of Art|
EDIT 12 December 2016
Jeffrey Hamburger has been in touch and kindly informs me that this style of illumination is in fact representative of Alsace, not Austria. It is possible, however, that the manuscript comes from a house derived from Alsace: he cites Kirchheim unter Teck, in Württemberg, which was founded by Dominican nuns from Strasbourg, who brought their Alsatian style with them (cf. his article in the Christopher de Hamel Festschrift).