Hard to say without an autopsy. So many filter brands have changed factory umbrellas recently. So many takeovers and buyouts.
Not sure, but that filter may have an origin of 08/24/10. If so, that may be quite media-brittle.
I've boycotted ebay for a couple years now. Never know if the arriving product is same as pictured. Often times the product is old as dirt. They won't force the seller to ship a 2nd one, if the original package gets delivered to the same address on a nearby block. No 2nd delivery if I can prove no package was delivered to my residence... via security camera footage.... nothing.
No more ebay for me. In my situation, they backed the seller - more than the purchaser. Skaarru Ebay.