Pattern is similar to Macbeth-Evans Petalware. It has also been suggested that this might be one of the Corning patterns sold in Canada.
This unknown "Swirl" sherbet in the Gallery is the same pattern.
This pattern has not found in current references, but the shape of the pattern bears strong resemblance to MacBeth-Evans Petalware. Examples can be found on pages 176 and 177 of Florence's Depression Glass, 19th Ed. The detail of the ribbed edge on the plate and sherbet is the same as the Petalware pieces. The center of the swirl items includes concentric circles that also appear in the Petalware pattern. The soft pink color is identical to MacBeth-Evan's pink. The swirl rib count of the plate is the same as other similar pattern MacBeth-Evans serving plates from the same time period. I'm positive the items are MacBeth-Evans, but absent documentation, both the sherbet and the plate are assigned to the Unknown section of the Gallery.