Model C Pinking Shears Coated with Par-Al-Ketone

Based on the paperwork and postal zone in the address, this pair dates to 1943 or 1944. During the war years. Par-Al-Ketone, was, and still is, a product of Black Bear Company. On the box cover:

These pinking shears are coated with Par-Alketone A.N.C. 152.

Before using . . Dissolve preservative and brush shear teeth with mineral spirits, kerosene, or gasoline, – Then wipe with sewing machine oil and dry carefully with clean rag.

Additional instructions in box.
J. Wiss & Sons Co.
Newark 7, N.J., U.S.A.

CB9 Par Alketone