It's exciting to be researching some new stuff.
Egypt Interpostal Seals 1878-1879, pictured are the type V varietes. Script in Arabic translates “ Khedival Egyptian Post." Issued after the offical post bought Muzzi's private monopoly. Interpostals were lithographed on white woven paper, 5 dies were used for Type V.
A great source for further study: http://interpostalseals.com/
