All About Pocket Knives

Howdy everyone,
Did Case ever produce a 510098 pattern? There's one on the bay, item #330168136078, but I can't find it in any of my books. He claims it to be a 1980's knife. It's a single blade, one arm razor.
Thanks for any help.
Richard

yes, its on page 320 of parkers volume 7, mint price 100.00 listed in the book.

Thanks Steve.