This attractive pair from Switzerland (1969) belongs to the well-known Pro Patria semi-postal charity series, issued to support Swiss cultural heritage initiatives. The 10+10 rappen stamp depicts a medieval cloister motif from Königsfelden, showing a monk with birds rendered in stained-glass style. The 50+20 rappen value features a Madonna and Child window from the Swiss National Museum in Zurich. Designed with vivid colors and detailed Gothic artwork, these issues highlight Switzerland’s rich ecclesiastical artistic traditions. Clean examples of this classic charity set remain popular among thematic collectors focusing on religious art and European cultural heritage.