antique Keystone Press sealer tool for pressing lead packing seals, vintage railroad tool w/ 1800s patents

Antique Keystone Press sealer for pressing lead seals. It is made by Keystone Press & Seal and is nicely marked with patent dates from 1887 to 1903.

It measures about 14" long with wood handles and a nice patina of age.

This sealer would be used for pressing the dies to emboss the lead packing seal for railroad freight crates and boxes.