cover 10Kr. blue, affixed to reverse of 1871 Official E.L. registered to Baja, cancelled by "BACS" c.d.s. (23.3) in brown, front showing a second despatch c.d.s. together with framed "AJÁNLOTT" h.s. in black. A rare example of a piece of "Free" Official mail, only liable for the 10Kr. registration fee. Very rare. Photo