Art Deco 1920s thistle brooch. This Ciro silver brooch is set with marcasite stones. The piece is hallmarked SCP England, a hallmark used on pieces of jewellery Ciro jewellery made out of silver. Ciro is a English jewellery brand established in 1917, they are currently residing in the prestigious Burlington Arcade in London. The brooch 5cm / 2" in length and 2cm / 0.7".