Blue waistcoat, yelek.
From Christopher Marsden, Senior Archivist at the V&A, relating to the costume: The Nominal File for Horniman Museum & Library (archive reference MA/1/H2850) held in the Archive here has some papers relating to this costume. The relevant papers are RP/1947/2753, comprising a gift from marked 'Anonymous' and describing the object as 'A Turkish costume comprising 6 pieces'. There is a note in the file from a member of British Museum staff stating 'This Turkish dress was bought years ago in Constantinople as a memento, and perhaps may be of some use to replace. It is almost complete I believe. It seems a pity to leave it to the moths!' A minute from a member of V&A staff states 'This modern Turkish costume is of no interest to us. The Horniman Mus. will probably want it.' The file contains a very little more paperwork relating to the costume including the usual letters of thanks for the gift from the Horniman. Newton, Charles: 2013-10-31.