The date code shows my Purolators were made in Purolator's Fayetteville factory. The identical-looking Bosch must've been made there, too, in a "contract run."No brand or manufacturer makes a complete catalog of oil filters. They all do contract runs for each other, especially when it comes to cartridge filter.
Incidentally, newer Purolators of the same number are a completely different design, so may be from some other manufacturer. They look like a crude imitation of the Toyota-Denso no-end-cap design.