Nixdorf Mini Computer SIEMENS Rare Collectible 16-bit System 480 Front Panel (Brief eBay "flash")

Interesting item from the same seller as this removable front panel:

Vintage Computer ENTREX NIXDORF SIEMENS OLD Rare Collectible 16-bit Front Panel

(while the eBay ID is different, it is the same seller, Dick Dubois, former Entrex engineer)

In one day, the listing was created, then removed, and not yet relisted.  Interesting, since he has another one nearly identical, that has been listed steadily for 3.5 years or more.  What happened to this one?

Original eBay Auction                       eBay Auction Archive

From my 2019 visit to the Nixdorf Museum in Paderborn Germany: