Research. I love it when it comes together.

Concordia Crescimus- To Grow In Harmony.
I have in recent years sold three of these art nouveau brooches, two of silver and one in 9ct gold. They were all made by the jeweller's, William Hair Haseler, who are best known for producing Liberty's cymric range, which was designed, (amongst others), by Archibald Knox. Although this brooch is clearly art nouveau in design, it's actually hallmarked for 1933, so it's certainly not of the art nouveau period. My research in to the latin motto, led me to Polam Hall School, in Darlington, (once a private girl's school). The school colours are green and yellow, the school badge has a yellow flower, and the school magazine is called, "Buttercup News"; not being a horticulturalist myself, I didn't realize the flower on this brooch was a buttercup, until I linked it with the title of the school's magazine. From old blurry photos I've seen, I believe this brooch/badge was worn on the girl's hat bands; that's some school, where the pupils wear 9ct gold cap badges!
For me the joy in dealing in antique jewellery isn't just about profits, it's as much about finding out all I can about the history of a piece. As well as selling three of these brooches myself, I've also seen other dealers selling them, and it's quite clear that for most of them their research ended with the translation of the latin motto; some have gone a bit further, and suggested the brooch may have something to do with an 'unknown horticultural society', or the 'Ontario Medical Association', but as yet none have made the connection with Polam Hall School and their "Buttercup News".