There's a fast-food outlet here in UK called West Cornwall Pasty Company. Their outlets are all painted black (a la Cornish flag) and with twee pics of pirates etc everywhere. Their 'pasties' are dire, too greasy, flaky rather than shortcrust pastry and the insides gristly and not at all authentic. (I used to have holidays in St Ives in the fifties and the true Cornish pasties were to die for.) But the West Cornwall ones are crimped to the side. One out of ten for authenticity then! By the way, my mother used to do all sorts of amazing things with her fingers (crimping pastry I mean!) making lovely patterns and never resorting to crimpers of any kind. She used her hands/fingers for nearly all baking, and never even had scales to weigh. Cake-mixing was literally hands-on. All she had as I remember was a set of scone cutters.