cover #1 black, used together with 1934-36 1½d. (2, both perfins) on long blue envelope registered to Argentina, the 1 being from the foot of the sheet with pieces of selvedge affixed around the other three sides, tied by "REGISTERED/London Chief Office, E.C.1" oval rubber datestamps for 24 April 1936; the envelope a little creased and the 1 withdiagonal crease at lower right but otherwise fine. Scarce franking. Photo