Interesting. I found this old thread on eBay about this very cutter, but, unfortunately, no one there could identify it either: https://community.ebay.com/t5/...er-Pics/td-p/1283666
Have you tried calling the Wilton store in Darien, IL? I bet someone there could help. They do an amazing job of documenting their corporate history throughout the adjacent classroom building; I'd be surprised if they didn't have an inventory of all of their old cutters too.