Comparison of some wax-drip pipes
The idea of a finish imitating a candle surface or a candle end certainly first turned up in Italy at Castello's. This odd finish has evoluted both as to makers and time.
The most famous (Click thumbnails):
Other remarkable brands (Click thumbnails):
Brands less known for their wax drip pipes (Click thumbnails):

Tekin (Meerschaum)

Russ Cook
Inverted wax drip pipes (Click thumbnails):