Help with Wallace Cornflower Piece Dating & Pattern

Hello, I have a cheese scoop marked R. Wallace & Sons. it is not marked sterling so I assume it is silverplate but as others have not found a reference to help me date the mark nor can I find the pattern name. It has Cornflowers on it with teeny little rows of corn in the backround. I found a similar one on the big replacement service site (they didnt have a pattern name) but mine is a bit different and I wondered if maybe mine was sterling just not marked as such and if anyone might know the pattern name. . I would appreciate any help, thank you!