1877, "Post Obitum", Brown
Large Die Proof on India (OX1P1). 48 x 30mm die sunk on 92 x 70mm card,
small mount remnant on back, Very Fine, an extremely rare and unlisted die
proof of the first-issue seal, incorporating the Latin term for "dead" into
the background of the design -- the seals were intended for use by the Dead
Letter Office in resealing letters that were opened to check the contents
and sender's identity (Image)