解拆Canon鏡 EF 38-80mm f/4-5.6 USM

This is a very old lens with fungus grown. I got when I bought a second hand Canon EOS 30V camera many many years ago. Please note that is a film camera. Inspired by a post of how-to break down the lens, today I broke myself one into parts and clean it. However the last is sealed and I can only cleaned most of them.