I am not an expert, but I believe they were made in the 1800s and probably the 1880s.
Antique 8.25” Railroad Monkey Wrench/Hammer for Refrigerated Box Cars
Antique Trolley Railroad Johnson Universal change maker box patent 1465409
Antique Trolley Railroad Johnson Universal change maker box . As Is.
Antique Russwin 18” Monkey Wrench Wood Handles Railroad Wrench
Antique Sargent 12” Monkey Wrench Adjustable Railroad Tool Stunning
Antique L COES RAILROAD Monkey Wrench Worcester MA 10 1/2 Inch
