This is one heck of a pony blob top. An 1870s beer bottle from Easton PA. I find the name Willibald to be humorous. Great embossing, with a W on the front, a K on the back, and a WK on the base.
Funny seeing this here. I found half of an 1880s Kuebler 2 weeks ago. It also has the W on the front and the K on the back. I've found squat shards on the site so hopefully I find a pony soon!