Place eggs in a 2 quart saucepan and cover with water. Bring water to a boil. Remove from heat, cover and let stand for 10-12 minutes. Remove eggs from hot water and cool. Press the yolks of hard-boiled eggs through a sieve and set aside.
In a large pot, melt the butter over medium low heat. Add the green onions and celery; cook, stirring occasionally, until the vegetables are soft, about 4 minutes. Add the flour and cook and stir for 2 minutes. Stir in the stock, Brown's milk and cream. Bring to a simmer.
Add cooked egg yolks, crabmeat, sherry, salt and pepper and heat through. Ladle into bowls and garnish each serving with a pinch of paprika and a lemon slice.