I found this interesting video that was posted at a local forum. My favorite part was around 6:18 where it shows how they stamped the chain ring.
Gazelle 1925 from Gazelle Bicycles Australia on Vimeo.
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How a Gazelle Bicycle was made in the 1920′s
On May - 9 - 2010
Very cool… thanks!
Gazelle is a Dutch manufacturer and all the original text in the clip is Dutch, what does this have to do with Australia???