Vintage Antique Carborundum Strop by The Carborundum Company, Niagara Falls, NY USA
c. 1910
In an Ira Freeman's Superior Metallic Strap for Razors & Surgical Instruments Box
13.5" x 1.25"
Note on box reads: Be particularly careful to draw your razor but a few times from heel to point on the composition side, as it is very sharp and powerful, possessing all the qualities of the hone, without its harshness. A few strokes on the smooth side after using, has a tendency to keep the edge from rusting. A little sweet oil occasionally applied to the strop is of service to it.
Manufactured at Sandy Hill, NY