Rectangular cast aluminum nameplate for a piece of machinery.
Raised letters read: "Hercules Powder Company/
H--2 Ayer Shell Machine/ Patent No. 1575894/No -- 34". One hole drilled in centre of each short side.
Acquisition
Source (if not Accessioned)
Martin, Paul
Notes
Accession Date: 15-Oct-08
Mode of Acquisition: gift
