Well, it is technically is not from a "buggy pole"... which are the (two) very long wooden poles that go from the buggy forward alongside the horse, whose harness is attached to the poles. It is definitely a Whiffletree-tip, from the 1890s and on into the early 20th Century. A Whiffletree-tip exactly like yours is shown in a 1895 horse-&-wagon harness catalog. See the scan of it, below. Also, another scan showing it in a 1907 Sears catalog.
A Whiffletree is a thick wooden rod which is part of a wagon's "tree" that the horses' harness attaches to. See the photo below, showing a whiffletree-tip "in place" on the wagon tree's thick wooden (cross)bar.