This one’s been on campus a long time. Anyone know where it is—and what it is?

Hint: This object has a link to a previous “Where’d I See That?” Can anyone explain that link? If you think you know the answer, write it on the tag on a 7 mm O’Neil wetsuit (size M) and send it to to Newsline, 120 Alumni Center, 229 Main St., Keene, NH 03435. Or use the “comments” link, below.