The Collaborative International Dictionary of English v.0.48:

Lussheburgh \Lus"she*burgh\, n.
   A spurious coin of light weight imported into England from
   Luxemburg, or Lussheburgh, as it was formerly called. [Obs.]
   [1913 Webster]

         God wot, no Lussheburghes payen ye.      --Chaucer.
   [1913 Webster]