Early gold pen makers who made the Kossuth pen. A 1856 Ad reads:

The KOSSUTH PEN with extension holder
manufactured by Beers & Clark, which by the fine-
ness and delicacy of its point, its flexibility and the
facility with which it accommodates itself to the
heaviest and the finest strokes, and its general con-
venience, has made itself the pen of the day-the
most desirable-the most convenient, in a word, the
Best

If anyone has any information to share, please let me know at:

rd@kamakurapens.com