Zipper Loop Lamp Reissues, Imperial
The new lamps were made from the same molds that the classic era ones were. The new examples, found in marigold and smoke, have an IG mark on the inside of the base, part way up. The mark is sometimes hard to find.

In 2012 a marigold lamp sold for $80 at an online auction, a smoke example for $160. In 2013 one in smoke brought $110.