City arms (3 crowns above 2 intertwined arabesques) in ornate shield, date above, value in legend below, IMPERIALIS.CIVI.COLON 4.ALB // Crowned imperial eagle, imperial orb on chest, FERDINAND.II.D.G.RO.IM.SE.AVG. 25mm, 2.73 grams. Cologne mint. Noss Co IV# 333ff; KM# 334; Numista 93136.