This whip has a staghorn handle.
There is a somewhat dented silver button stamped "Swaine & Adeney, London" on the heel of the staghorn.
It has a silver plated collar with no stamps or engravings .
There is a dent and a few  scrapes on the collar.
The slim stock or shaft is covered in braided mahogany coloured leather .
It has its original stitched leather keeper, the surface of this is worn, but it is still quite flexible. It could be replaced.

The whip has a  braided leather thong with cord lash, there is a bound repair to the thong near the keeper - please look at the images

Dimensions : Staghorn : 4¼" (10.8cm) Length (not including keeper) 18½" (47cm), keeper 5" (12.8cm), Thong (not including lash) 52" (132cm)
Weight 180g (6¼ oz)

Ref : whip1592