Show me a coat-of-arms: The Lyncenich armorial.
Elmar Hofman recently summarized a number of research problems concerning medieval armorials, among which were: by whom and for what purpose(s) were they made (https:/heraldica.hypotheses.org/4901 on 20/09/2016)? Though I know that Elmar does put great importance on knowing both content and context of any armorial studied, I felt that for the casual reader, he somewhat underplayed the descriptive work needed before any serious discussion can take place. That was...