You are buying secondhand. Lenses may have dust inside or minor marks on the coatings.
Canon Speedlite 300EZ for Canon EOS #1
Tested [Near MINT] Canon Speedlite 300EZ Shoe Mount Flash for EOS From JAPAN
Canon Speedlite 300EZ Flash Attachment For EOS 35mm Film Cameras Tested Working
Canon Speedlite 300EZ Flash for 35mm Auto Focus Film Cameras Combi P&P
Canon Speedlite 300EZ Shoe Mounted Flash + Case Suitable For EOS EF Cameras
![Tested [Near MINT] Canon Speedlite 300EZ Shoe Mount Flash for EOS From JAPAN](https://images.buynet.work/thumb.php?i=372022440&s=240)
![Tested [Near MINT] Canon Speedlite 300EZ Shoe Mount Flash for EOS From JAPAN](https://images.buynet.work/thumb.php?i=378499230&s=240)