Other than the application uniqueness of added anti-siphon valve (for Zetec engine) looks pretty much like a Puro Classic from 2010. As noted, material used to seal bypass a phenolic/ (resin) type material. Not cork. Zee coined that term for the material many years ago (same year topic filter made). Later having dissected several of that type Puro bypass personally, seems a good term. Looks like typical Puro cellulous media type to me. Cut open many AAP Total Grip filters back in the day, looks the same to me.
The rubber disc a mystery to me but if I was to 'speculate', because this application has the added anti-valve I'd speculate that's where it came from. Dissection allowed/caused displacement. Filter is 10 years old. Other than that, looks pretty good to me. Fairly typical of Puro OFs I used when topic filter made.
Thanks for c&p.