Objects in image: Envelope
Text visible in image: Merlax, I5, Kum, Medaa, Ths, 0, 13.1m.17.5-6V
Question: what does the stamp say?
Answers: delft 13.111.17.5-6 v, delft, delft 9, delft, delft, delft13.111.17.5-6v, delft, a935711113, delft 9, unanswerable