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Thanks for posting this find!
You've really got something there; this is the first have ever heard of Limited mixte and have been an east bay resident for fifty-two years.
Interesting combination construction of lugless head and seat paired with lugged crown and shell.
Shall look forward to reading the comments of the Eisentraut experts...
Tip -
these framesets have mixed (mixte!) threading of BSC steerer and headset paired with Italian bottom bracket shell
Note to self: "you have been going to the wrong garage sales me boy"
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