Dianthus 'Mrs. Sinkins'

[aftermidnight]

Is anyone growing this old fashioned Dianthus, I've been looking for, it seems like forever for seed of it or it's pink sport. I grew it years ago and would dearly love to have it in my garden again. Not a show bloom by any means but I miss it's heady fragrance. I'm looking for seed, we don't have a problem with most garden seeds crossing the border. The only place I've found it so far is T&M.uk and they only sell plants . Anyone know of a source where I can buy seed?
Annette