50 Piso Sergio Osmeña Centenary

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.