Quarter potatoes length wise anc cut them crosswise into 1/2 inches pieces. Boil potatoes until tender about 10-15 minute Cook bacon until crispy, drain. Reserve the drippings.
Put drippings in skillet add the onion and celery, cook the mixture over low heat stirring until the onion is softened. add the sugar, flour and celery seeds cooking form about 30 seconds. Stir in the mustar, vinegar and 1/2 cup water, bring mixture to a boil. and then simmer for 2 minute or until thick. Season the dresing with salt and pepper, pour over the potatoes and stir in the eggs, pickles, bacon, and scallion greens. Serve warm.