GREEN TWISTED OPTIC Imperial.

PATTERN NAME: TWISTED OPTIC. 

This pattern is very similar to the Spiral pattern made by Hocking Glass Company, 1928-1930.

It can be found on pages 188-189 in The Collector's Encyclopedia of Depression (Revised Tenth Edition) Glass By Gene Florence "America's #1 Best Selling Glass Book!"

TWISTED OPTIC -  Spirals counterclockwise to the right.
SPIRAL By Hocking - Spirals clockwise to the left.

ALIAS NAMES: IMPERIAL 313 LINE
CATAGORY: DEPRESSION
MANUFACTURER: IMPERIAL GLASS COMPANY
YEARS MADE: 1927 - 1930
PRIMARY COLORS: Canary Yellow, Green, Pink
OTHER COLORS: Amber, Blue, Iridescent crystal, Ruby
Pattern consists of a cup and saucer, a creamer and sugar, numerous sizes of bowls, plates and covered candy jars, 2 sizes of candlesticks, a basket, a compote, a mayonnaise, a pitcher, an oval platter, a covered powder jar, a covered preserve, 3 styles of sandwich servers, a sherbet, 2 sizes of tumblers and 5 styles of vases.