Hi, From what we know since last week, is that there was a special ca 1993, to personalize you player, by adding your name. On the DCC600 it would be embedded on the front and with a 900, it would be inside the tray. Just like yours. So M. Buytendijk is a previous user of the 900. You don’t see this very often btw.
Interesting! The deck is not mine, someone wants to sell it now. Ralph, thank you for the explanation.