Czech buy Erphila Art pottery vase Rare design

Very unusual Erphila pattern, never seen another!
Smoky swirls of red, yellow, blue, and green on a brown background with buy bright green interior.
Marks on bottom are: embossed #6356/7, stamped D.1407;
stamped Made in Czechoslovakia;
stamped "ERPHILA" ART POTTERY
EXCELLENT CONDITION -no chips or cracks