Binding
Contemporary, German
City or Locale: NRW
Workshop: undetermined
                    
                   

Stamps
(Source)
  

Other details
  Covering: calf
  Endbands: saddle-stitched
  Boards: oak
  Supports: thongs
  Edges: yellow
  Binding waste:
  Text finish: rubricated, red and blue
                      added penwork

Notes:
In The Archaeology of Medieval Bookbinding, Jan Szirmai illustrates an example of "cross-hatching...to improve adhesion of the leather." His example refers to leather turn-ins ( p. 230). This appears to be another example of the same practice, here with the cross-hatching on the outer surface of the boards near the hinges.
I have not been able to localize this binding. None of the stamps seem to be in Kyriss, Schwenke/Schunke, or EBDB. However, there are several characteristics that point to this as a German binding of the lower Rhein region (calfskin over cushioned oak boards, catch plates, saddle-stitched endband remains, overall layout of the stamped design).