CAFDA768 Canada Scott # 768 Commemorative Stamp Launch FDC
First Day Cover. Ottawa 78.09.21. Marguerite d'Youville
Chung / Narbonne Specialized Catalogue: P099
Guests attending the official launch ceremony of a commemorative or definitive stamp issue in the late 1970s were presented with an official First Day Cover overprinted with an inscription below the cachet.