This is
another name that was used by more than one company. Before 1922 it was a
trademark of Soper & Sievewright. Later Keystone pens seem to be cheap pens
made by Wearever and others.
Photos Coming Soon
Our Other Web Site: NOS Vintage Benrus Watch Dials -
1000s of factory original dials for Benrus watches of the 1940s,
50s, 60s & 70s Paul Wirt Fountain Pens
-History & Information about this early "Father of Fountain Pens"