I'm back from my short birthday break, and this (1960s?) brooch was one of my finds: It looks like the kind of button you'd press to call a lift It has a mark on the back of a swan with a crown: I've tried looking up the mark and discovered that Lang used a swan with a crown for their sterling jewellery (this brooch definitely isn't silver!) and Swarovski used a swan after 1988. But it doesn't look like either of the examples I've seen. Does anyone recognise it? Thanks in advance!