The IBRA 2023 Grand Prizes were announced at the Palmares dinner on Saturday evening, 27th May:

• Grand Prix d’Honneur: Walter Britz (Uruguay), “Uruguay: Early issues of the XIX century (1856-1862)”
• Grand Prix International: Julio Cesar Ponce Lozada (Peru), “The mail system in the Viceroyalti of Peru”
• Grand Prix National: Alfred Schmidt (Germany), “Prussia – The first three issues 1850-59”