Q79 July, 2010   member 240 ŁE1 Hosni Mubarak 4th Term (SG 2123, NP1458) 1mm leftward slip. I was very surprised to see that Lot 639 did not sell in the recent Auction 49. It is an unrecorded horizontal strip of three of the 1999 ŁE1 Hosni Mubarak 4th Term (SG 2123, NP1458) air mail, used on a small parcel card with illegible markings. The left-hand stamp, alone remarkably, shows a prominent 1mm leftward slip in the pale blue colour. Is there a printing expert who could tell me how this could possibly have happened?