World Wide Fund for Nature: birds

4 stamp records · 4c / 4c / 10c / 10c

Ordinary basic design/value types plus explicitly documented major watermark differences. Excludes postage dues (separately researched), unchanged reprints, repeated formats, plate/pane numbers, errors and minor varieties.

• Joseph Farrugia, contemporary issue study / postal diary, PSM 22(2-3), pp. 44–45 ↗