Ah, lessons from the Guru. Thanks Walter!

Thank you, thank you. I am sure it is from a golden rain tree. Mystery solved!

The paper part looks like Lunaria but the seeds of lunaria are flattened. Could this be from a goldenraintree?

Thank you for your prompt response Bobby. It shares some similarities with the Lunaria Annua but the pods structure is quite different. My mystery pod has a raised central ‘vein’ with two spherical shiny black seeds attached to little ‘branches’. I would love to hear of any other suggestions. I have never seen these seed pods on a plant – just on the ground.

Having watched the adventures of Crocodile Dundee more than once if feel uniquely qualified to take a stab at this! It looks like what we call a money plant here in the SE USA. Lunaria Annua is found in parts of Australia as a naturalized invasive. In this case it is referred as a “sleeper” which could present a need for control in certain areas. Please refer to this link page 20 of the pdf http://awsassets.wwf.org.au/downloads/sp092_list_invasive_garden_plant_4apr06.pdf