Yes, a Minisprint. Expect to pay a very great deal of money for a genuine original one, as they are very rare and desirable. I have not seen one for a long time. There may be problems with the supply of body panels, windscreens etc. Article from 1967:
One for sale in France:
Unfortunately, no indication of price. I would like to know!
However they are being made again, but are not the same as the original, and are unlikely to rise in value very much in my opinion. But who knows, they could become highly desirable. Some things are not predictable. They are only based on new or properly restored bodyshells.
Or you could go for a Domino, which is a GPR bodied Mini, with reduced height, and will be much cheaper.