The Red swirled ones, which I called oxblood, is very similar to the oxblood coloring in early MFC and Akro Agate Marbles as well as the Akro Agate oxblood swirled dishes and ash trays. Man I love those Inks.
horribly contaminated garbage glass makes great bottles.
They wasted no glass[] In the USA we just made insulators out of that stuff.
I have found a few english sauce bottles that had the weird streaks like that.