I'd have thought unlikely with the wavy rim, John. Small bowls tended to be "bread-and-butter" sorts of bits and have consistent round shapes.
Lustre on IoWSG has a goldy sort of end apprearance rather than "bright" rainbowy - and both Summer Fruits and Meadow Garden have different coloured splodges over the general base colours - they also have thin sticks of enamels decorating them.