Covers (arranged chronologically)
All from Reykjavik unless otherwise stated
cover 1878 (17 June) XU5 to Liverpool via Leith (transit c.d.s. on reverse), bearing 20a. lilac (blurred impression) 1st. printing, good colour and well-centred, small defects at right top and with several blunt perfs at right, tied by c.d.s. (17.6) Type B. A great rarity and believed to be the earliest known useage of the stamp on cover. F. 14a. Photo in colour.
Details
cover 1878 (17 June) XU5 to Liverpool via Leith (transit c.d.s. on reverse), bearing 20a. lilac (blurred impression) 1st. printing, good colour and well-centred, small defects at right top and with several blunt perfs at right, tied by c.d.s. (17.6) Type B. A great rarity and believed to be the earliest known useage of the stamp on cover. F. 14a. Photo in colour.
Further details
Note: The above is illustrated on page 178 of "One Hundred Years of Icelandic Stamps".