"Antje" the only captive walrus I've ever seen with an impressive pair of tusks. (She can now be seen mounted in Hamburg University's Zoology Museum.)
Scanned from an old 35mm slide.
(I've recently located a box of 35mm photograhic slides that I'd mislaid; this box contains a number of my photos from European zoo visits in the late 1980s and early 1990s.
I've had some of these pictures digitally scanned for uploading to ZooChat. More will follow in due course.)