With all the digitone quality control issues on the “key” numbers, I’m wondering if all this store webpage “digitone keys” detective work is a red herring. Could just be stand in product codes for customers who need individual replacement “keys” because they got two “14” keys or something. They aren’t for display on the website, but their search indexing is clearly picking them up.
This even explains why there are “16” showing up for the number in the category.
At least this is what I will hope for, since a “digitone keys” sounds totally uselss and a waste of space to me.