I bought a new hard disc. It probably doesn’t work anymore, but then it did only cost me £5.20. I don’t care what anyone says, I like it. It is hanging behind my desk at work.
Here is the eBay description:
14″ hard disk platter from the 1970s
From the days when programmers didn’t eat quiche!
This platter from a hard disk drive came from a Hull University mainframe in 1978. The disk is 14 inches (35.5cm) in diameter and 1.5mm thick.
It is made from a hard aluminium alloy coated with magnetic material. One side is covered with a random collection of supermarket price and product labels of the period. Even though it has been used as a rather lethal frisbee, it is still perfectly flat.
And here are some photos:
Will writes 
That’s awesome…..
That is actually quite interesting. I must admit i really didn’t expect to find anything at all interesting here ;) but those labels are pretty cool. A very Will item. ;)
I have just dismantled an old PC expecting to find something that looked like a hard disc. I can find nothing like it, unless it is sealed inside a slab that I cannot open, the size of which is about 5 inches by 4 inches. Could that be it?
Your hard disc is an interesting antique piece, I assume from the days when they were much larger than now.
Best regards, Peter.
The slab will be the hard disc. If there is no important data on it take it apart, you may find some very strong magnets inside which are fun to play with :)
There is a good article on news.com.com about hard discs through the ages.