Join Date: Sep 2008
Location: Collegeville, PA
Bikes: Ruckelshaus Randonneur, Specialized Allez (early 90's, steel), Ruckelshaus Path Bomber currently being built
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Number set like Scooper linked to, applied to the BB (non-drive side) with a ball-peen hammer, going with the radius of the shell (i.e. the letters are on the same line as the edge of the BB shell).
Of course, for the number "1", you could just use a file.