Wrinkled seed potatoes

I have planted the old wrinkly ones before, they grew just fine. So a couple of weeks ago I put four left-over Charlotte tubers into buckets of compost, they are through already.

The tubers I planted were shrivelled and wrinkly, the chits had formed little bulbs at the base. My granddaughter had broken one of those chits off, so I planted that on its own in a three inch pot in late May. It grew, so I've potted it on into a bigger pot. It's made a nice healthy looking potato plant already, so I'm looking forward to see what sort of crop it makes.