Most people don't know Marusan made 3 different HO scale ambulance sets. All of them very weird because on the type of ambulances used in the 3 sets. All 3 sets we have here at the museum have a transformer and road signs. Here are the 3 sets ,all of them rare with the 2 car set being the rarest. The 3rd set is the only set with 2 cars a Rolls Royce ambulance and a Ferrari GTO. Why would they pick for an ambulance a MGA convertible with a light on top ? Why would they pick a Rolls Royce as an ambulance ? All sets are MIB.