Happy "Thüringen Thursday"
All 3 of these are from an auction I had in 2009 and saved the pix from.
First is what I'd call a submarine, w/ just as much going on inside as outside, one pontil is faceted and the other a melted pigtail, so I'm dating it somewhere between 1850 and 1870, early German marble production.
Next one is a Joseph coat. @ just over an inch w/ a lattice looking jell core, both pontils on this one are unfinished.
Not sure what you'd call this one ? w/ amethyst base glass and yellow swirls going through it, I call it a single pontil transitional. The pontil on this one is unfinished and appears to be broken off and left.