| Date | late 14th or early 15th
          century | 
        
          | Place | Paris (?) | 
        
          | Material | Brass | 
        
          | Acquisition | Presented by J.A. Billmeir in
          1957 | 
        
          | Accession | 1957-84/17 | 
      
     
    
      
Provenance
Billmeir acquired it with the collection
      of Henri Michel, of Brussels, which he purchased about 1950.
      The monogram or symbol on the throne, appearing to contain
      the gothic figure 4, might be expected to be a maker's or
      owner's mark, but has not been explained. The lettering on
      the plate for latitude 49° ('PIS', of which the P carries a
      horizontal bar, either a monogram or an contraction
      indicator) was interpreted by Michel as Thomas de Pisan and
      an imaginative provenance relating it to the French king
      Charles V extrapolated from that; almost certainly it simply
      means Paris (the latitude of the plate). The specific
      latitude plate for 51° 40' however would suggest an original
      owner in the Netherlands or Germany, or of course Oxford.