4p bright ultramarine 'Graf Zeppelin' TRIANGULAR issue, a fine mint side marginal IMPERF PAIR. Uncommon. (SG 435, Kneitschel #51f)
4p bright ultramarine 'Graf Zeppelin' TRIANGULAR issue, a fine mint side marginal IMPERF PAIR. Uncommon. (SG 435, Kneitschel #51f)