Hmmmm worth up to £8k you say??
....... So I'm thinking.... buy myself a reasonable mini for about £1.5k.... get £2.8k changed up into 2p coins (as they are about the same size as the old penny) spend a few months sticking a few coins on each day with some araldite and then sell the Worlds first "Two Penny Mini" for a cool £3.7k profit ....KERR-CHING!!
You would make a fair bit more than that as 14,000 2p's comes to 28,000p's which is only £280. Making your potential profit nearer 6k