 Amongst the rarest items in the museum are the Riggal Papers.These are the training records of Captain P M Riggal, an instructor in the SOE, found 50 years after the end of the Second World War.On 7 September 2016, nearly 100 artefacts from the museum's SOE and Mason collections were shipped to the Musée de l'Armée in Paris for an exhibition called ""Guerres Secretes"" ("Secret Wars"), to run from 12 October 2016 and to 29 January 2017.