AC417: Glass Vial of 12 1.1mm Leads.

Date: c1920s

Size: Each lead is 1 inch long

In the 1920s, many manufacturers produced the 1.1mm leads in small glass tubes sealed with a tiny cork, including Parker and Conway Stewart.  I do not know who produced these leads, as the glass tubes have no label or any other means of identification on them.  Each tube contains 12 leads in what I think is probably an HB grade.  I currently have thirty-six packs of these leads.