CAFDA819 Canada Scott # 819 Commemorative Stamp Launch FDC
First Day Cover. Ottawa 79.05.11. Charles-Michel de Salaberry
Chung / Narbonne Specialized Catalogue: P122
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.