(left) a "new" measuring cup

(right) an "old" measuring cup

The one on the left is ice blue rather than the true clear Pyrex like the one on the right. The one on the left has nothing on the bottom and no embossing. The one on the right has embossing on the bottom. Both have red pyroglaze markings for the measurement scale. Which one do you think is cheaper to make? Now, just find that ice blue CD 128 Pyrex insulator!