CAFDA789-70s Canada Scott # 789-90 Definitive Launch FDC with signature!
First Day Cover. Ottawa 79.02.01 Quebec Carnival
Signed Gilles Lamontagne, Postmaster General
Chung / Narbonne Specialized Catalogue: P113
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.