I'm intrigued by the name of your example Christine

- Is that just a personal thing, or does it have a sticker saying 'I'm Audrey'

I was going to say that this seems large for a powder bowl but, apparently, many years later than this was made (presumably), Bagley did a 7" powder bowl in what they called 'CRYSTALTYNT', so guess some girls get through a lot of powder. Can't find anything in Gulliver to match, and S. & F. didn't appear to stock such pieces, and seems too big for Barrie Skelcher. It's an attractive piece, and think they used to make good money if undamaged.
Date wise, pieces such as shown by Chris always seem to end up being quoted as c. 1880.