These are silver coloured, probably nickel spurs with steel inserts which would fit into "boxes" in the heel of the boot.
The necks are curved in a swan or goose shape.
The rowels are decorated with a star.
There are decorative screw heads at the end of each arm.
The spurs are stamped "Flack & Smith",who were bootmakers in Davies Street, London in the late 19th & early 20th centuries, the central prongs are also stamped "Left" and "Right".
They are in good condition with a few surface scratches.

Very similar spurs can be seen in Charles de Lacy Lacy's 1902 book "The History of the Spur"

Internal width 7cm (approx 2¾"), neck 6cm (2¼"), rowel 2cm (¾")
Weight : 174g (6oz)

Ref : spur256