Antique Iron Hand Stamp Cancel Machine 1928

B.F Cumming's Antique Perforating Check Canceller 1928
Security Library Perforator, Cancelling Machine No. 15, advertised 1899-1928. 18 lb. $25 in 1928.
This could have been used either in a Post Office, Bank, Ticket Booth, Library
Dimensions:
Height: 10"
Length: 11"
Width: 4 1/2