For this post it was easy to gather material (pictures) depicting the year 1925. A number of architects signed and dated their work. Here is the proof. Also some of the memorials here display the year 1925.
The plaque mentioning Baron Brugman and Frédéric Brugman is one among many conmemorating the benefactors of the Hospice at rue Accolay. This link to “Brussels remembers” is very informative on this subject.
I would also like to take advantage of this post to include links that point to things that happened in 1925. For example “L’Exposition des Arts Décoratifs” in Paris on 1925 (art déco).