One day back in the 70s, I think was, I held a piece of moon rock in one hand and an aluminium rod from Surveyor 3 in the other hand.

They had been given to the director of Wellington's observatory. He used to pop into my camera store for a chat now and then, and came in one day clutching this ordinary-looking piece of aluminium to his chest as if it was reather precious, so I asked him what it was. On being told, I had to ask, "Can I hold it, please?" and he answered, "Yes, and I've got a piece of moon rock here too if you'd like to hold that!"

The piece of rock was about the size of two or three pinheads and encased in a zip-lock plastic bag, but hey, who's complaining?