Blenko glass was even created into glass trophies for the American Country Music Awards. While some Blenko pieces bear signatures that have been engraved, the vast majority of Blenko glass can be identified with a foil label that says BLENKO HANDCRAFT. The labels have been used since the '30s to '80s. So the Blenko glass label can help with determining the date of a Blenko piece.
Blenko's blown glass designs range from elaborate designs and elegant shapes such as amphorae and bent-neck cruets to tableware and stemware markets.