Griqualand West 1879 SG28 1/- Unrecorded Inverted Watermark U

1879 1/- green INVERTED WATERMARK (SG 28var). Fair U, lightly cancelled (used in Port Elizabeth as part of the post-annexation distribution of "G" ovptd stamps) UNRECORDED VARIETY THUS. Small hinge thin, nice appearance. Rare.