Universal Postal Union · 125th anniversary

5 stamp records · 6c / 16c / 22c / 27c / 37c

Basic ordinary postage types plus separately documented major watermark, paper, perforation or denomination differences. Excludes unchanged reprints, errors, marginal positions and repeated presentation formats.

• Anthony Fenech, contemporary 1999 postal diary, PSM 29(2), pp. 31–38 ↗
• Original issued five-stamp UPU strip photograph, face values visually read; research illustration only ↗