The second and third generation of the Marks family to run the jewellery business – (L–R) Graeme Marks, Rolf Marks, Ken Marks, and Percy Marks Jr. Inset: An Australian black opal brooch gifted from founder Percy 'The Opal King' Marks to his wife, Eliza Robinson Barton.

Percy Marks

Cameron Marks

Masonic presentation bracelet by Percy Marks.

The back of the Masonic presentation bracelet by Percy Marks.

Opal brooch from Percy to Eliza.

Percy Marks presentation to Sousa clipping.

Inside the Percy Marks store at 49 Castlereagh Street in the Sydney CBD.

Crowed ouside store.

Percy Marks is escorted by police as he carries jewellery from one store to another.

Percy Marks farwell gift to bandleader Sousa (USA)1911.

The Aust. article Alice Rawson bracelet.