VINTAGE SET OF 3 VOLUMETRIC GLASSWARE IN LEATHER CASE Chemistry Lab Beaker Glass

Description

This is something I know nothing about.
I looked up the TD 20 Celsius online, which is marked on all of them, and it stated "volumetric glassware" and that is about all I know.
3 Beakers or glass measuring cups with a pouring spout.  30, 60, and 120 CC in good condition - clean and I find no cracks or chips.  Some minimal wear on some of the painted white surface, but overall very good condition.  The really cool thing is that these come in a leather cylinder shaped leather holder.  I could not find another one of these online.  I do not know age, but I assume this is pretty old.  No brand stamping or indication anywhere on glasses or holder.