Are you expecting a bit of interest for this?

Yes, I think so.

It's a very historic piece.

Everybody knows about Cook's Endeavour.

The ship ended up in Newport, Rhode Island, and it was scuttled then.

But before it was scuttled, Sir Joseph Banks heard about it and got a friend to go and get some samples from the ship's keel and wherever.

The keel was marginally made of elm.

You know, there could be so many things maybe through their family or a bit of nostalgia or something that grabs them as a kid that kind of skews them a bit.

[upbeat music] Do you ever look at your kids and think, "They've got it easy.

Life was so much harder back in my day." Well, have I got the podcast for you.

It's called Wait, They Did What? We take a trip back in time to when kids could buy fireworks, cars didn't have seat belts, and we all had to sing God Save the Queen.

They did what? They did what? They did what? I can't believe that.

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Wait, They Did What? is on ABC Listen and ABC iview.

So that is how the two of us came to be seated across the table from a leading numismatist.

William James Noble.