As thousands cheer on both sides of the river, 48 year-old Senator legend Walter Johnson throws a silver dollar to the far side of the Rappahannock, believed to be a 386-foot toss. The Washington, D.C. Sesquicentennial celebration, which includes commemorating the 204th anniversary of George Washington’s birth, stages the event to duplicate the alleged feat that the young Virginian accomplished when he threw a silver dollar across the Potomac River.