Fiscally Used Straits Settlements Stamps

Part of my senseless buying rampage of stamps over Ebay includes the purchase of these fiscally used stamps featuring two beautiful judicial cancellations on a King George V 25 cents, $1 and $2 stamps.  It seems that there were holes punched into these stamps too to render them used.  Since these stamps were used as revenue stamps, they are really quite worthless in the philatelic sense but people still do purchase them off Ebay.  I think the beauty of them really lies in the judicial cancellation.