| Ön yüz açıklaması |
Front-facing portrait vignette of Sergio Osmeña at left, set within a guilloche underprint. A commemorative black overprint at left reads '1KA-100 TAONG KAARAWAN 1878-1978 SERGIO OSMENA', marking the centenary of his birth. The seal of the Republic of the Philippines appears at lower right. |
| Ön yüz lejandı |
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| Arka yüz açıklaması |
Central vignette of the Batasang Pambansa legislative building rendered in intaglio, set against a red and orange guilloche underprint. The denomination numeral '50' appears in the upper left and upper right corners, with a further numeral in an ornate rosette at lower left. The inscription 'GUSALING BATASAN' appears below the building vignette, with 'LIMAMPUNG PISO' along the lower margin. |
| Arka yüz lejandı |
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| İmza(lar) |
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| Koruma türü |
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| Koruma açıklaması |
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| Varyantlar |
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Issued to mark the centenary of Sergio Osmeña's birth, this note appeared under the Marcos administration at a moment when commemorative issues served obvious political purposes — Osmeña, a Cebuano and the fourth President of the Commonwealth, was a safe historical figure to honor, long dead and carrying no threat to the regime. Giesecke & Devrient's Leipzig facility had been the BSP's preferred security printer through much of the 1970s, and the production quality is characteristically tight for the period.
A watermark is the sole listed security feature — modest by the standards of what G&D was producing elsewhere at the time.