Recent research has uncovered Heckert factory documents showing that this decor was actually produced by Fritz Heckert.
Examples of Changeant are typically attributed to, and sold as Loetz. Please also look at the "Silberband Shapes" at the top of the first decor page for
Kralik for other examples, and wide variety of shapes the decor is found in.
In October of 2014 Volkmar Schordt announced that the facotry name for this decor was revealed by his research to be "Changeant".
The decors known for many years as Kralik Silberbands, are now known to actually be Frizt Heckert Changeant.