Long-Lost Miniatures from the Sigmaringen Psalter

Looking at the Lost Art website in connection with this blog post, I encountered this image:

The accompanying text states that this leaf was auctioned in Berlin in 1936, in a forced liquidation sale of 500 objects owned by the Jewish art dealer A.S. Drey:

The Restitution of a Charter Dated 1199

Earlier this year I was looking at a collection of leaves and documents and came across one that looked particularly appealing, being written in a very elegant script and having a large intact seal: