In a small saucepan heat the vinegar over medium high heat until reduced by half. Add the butter and stir until blended. Set aside.
Lay scallops on a paper towel and try to remove as much moisture as possible. Salt and pepper both sides.
Heat 1/2 the butter in a large sauté pan until the butter just begins to brown. Gently lay 1/2 the scallops in the pan.
Do not disturb for 2 - 2 1/2 minutes.
Gently turn them over with tongs and let cook for another minute. Remove from pan, add more butter and repeat with remaining scallops.
Spoon sauce onto plates and place scallops on sauce.