Originally Posted by
juvela
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thanks very much Brent!
an Indian origin fits right in with the Brit style model marking
a new name for me
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this web site is a wonderful resource for understanding how frame building bits are made and their technology history. there is a section specifically on bottom bracket shells of the pre-investment cast era. explore a bit...
https://fietssite.jouwweb.nl/13/13e
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The BB from the inside is solid no sign of connecting metals. The welding seems meaningless