Genuine Canon power diaphragm assembly for the EF 28-105 4-5.6 USM lenses. Made by canon Japan.
This part was discontinued in June 2014. We have no other source at this time.
Genuine Canon lens mount for the EF 28-90 4-5.6 III lens. Made in Taiwan.  You can see the "Made in Taiwan" just above the lenses electrical contacts.
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