GB 1/- green (pl.13), cancelled C41 used abroad in GUAYAQUIL ECUADOR,

Good perfs as scan - no hidden faults. A superb wing-margin example, showing an excellent clear strike of the C41 handstamp.

An exceptional and very scarce 'used abroad' from this elusive Office.

Note on Postage:

Over £50 must be sent special delivery signed for @ £5 U.K.

or £5.80 international signed for.