I acquired a couple of binders full of photos, literature, and this info on Shell frame numbers.

I don't know how accurate it is, but here it is.  dennis

P.S. If anyone has numbers from any other tube benders, sent them to me for publication.


    

    

    

    

    

Catalog lifted from  http://full-frokkul.blogspot.com/2010/02/shell-racing-specialities.html    dennis
















 























https://www.sliderulemuseum.com/shell_thuet.htm





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