Very pretty set, but I'm not seeing anything that makes me think D&E. Wrong sort of clips on the earrings, for one thing - D&E preferred to use clips with holes so they could be strung up to dry after plating. You probably have an unsigned beauty made by one of the other better-quality jobbers. Early 50s would be my guess based on the row of baguettes. It could possibly be Weiss: they did go through a period where they put earrings - and presumably brooches - on cards marked AWCo but didn't mark the piece. But it's more likely to be an open line by one of the jobbers that Weiss also used.
