Source for double-edged razor blades

I am looking for a source for double edge razor blades used in an
English Brockam leather paring tool.  I have been unable to find a
U.S. source and wondered if perhaps these blades are more common in
England and Europe.  Thank you.

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                  Conservation DistList Instance 11:71
                 Distributed: Friday, February 20, 1998
                       Message Id: cdl-11-71-017
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