I haven't seen one in years. Sorta like Atlas oil filters for Esso/Exxon (pre-XOM)
Check that: This appears to be a Champ Lab MobilClean filter ..and it's the first time I've ever seen it.
So the answer is: Champ Labs ..the same people who make the M1 filters
Champ Ecore design. You can tell by the baseplate. It looks totally different than others. FWIW, the M1 filter I just put on my truck was the older style with the steel core.