A ''C'' size battery fits into the front of the locomotive. The front of the boiler is hinged. There is a switch on top. A battery was tried but there was no movement. The wheels move freely and easily. It was not taken apart. That will be left to the buyer or an expert. There appears to be a pin missing from the front wheel of the engine on both sides. Both cars have an intact tin hitch. The color on the tin appears to be excellent with only minor wear from use as pictured. The scale is not known. To judge the sizes the engine (not counting the hook hitch) measures 4-1/4'' long.