Oh, gosh,

Have to say I cringed when you said the words 'put it in a satchel'.

What I suggest is posting a query on the collectables and antiques board

http://community.ebay.com.au/forum/Coins-Stamps-Collectables/500000014

about the best way to pack china. You really really need to double box it.

I don't go with the dropping 1.2 metres standard. You need to be confident you can stand on a chair and hurl your parcel on to the floor as hard as you possibly can, then you get a vague idea of what Aus post will do to it.

I would refund once you get photographic evidence of the problem.

Sorry this has happened. 😞