Old thread, but
@sheiswe is still around.
I believe this is from Century Sterling and it’s their ‘Royal Rose’ pattern, introduced in 1938.
See the comparison below, but note that I’m showing the design as applied to spoons and forks, as opposed to on a knife handle.
View attachment 2086579
There are some minor differences for which there may be one of two reasons. It’s common for designs to be adapted slightly for aesthetic reasons on different items within a flatware set. Particularly for knife handles which have a relatively uniform width, versus spoons and forks where the handles tend to have a broad terminal and taper heavily towards the bowl. It’s also sometimes the case that after a style has been in production for a while, the manufacturer seeks to reduce the incidence of casting flaws by making minor design adjustments.