These are harness parts. a) is a leather strap with a metal buckle on one end and remains of rope on other end. b) is a leather strap with a metal rivet and two buckle holes. Although currently separate, item a) and b) buckle into each other.
Source:
Found in Collection (FIC)
Date of Object:
ca. 1920
Dimensions:
a) 58 cm L x 6.5 cm W x 2 cm H, b) 28.5 cm L x 3.5 cm W x .5 cm H