Thunderbird 4 was produced in one version only –battery operated– but there are slightly different castings/ mouldings of the toy. 

It featured:

OPERATES & STEERS ON LAND & WATER - the vehicle moves by means of a propeller in water and is steered by a rudder (which is not present on some versions) and on land is propelled by an electric motor / 2 wheels & steered by moving the front wheel on the underside.

AQUANAUT GORDON TRACY - A blue plastic Gordon sits at the controls.

The box originally contained 3 cardboard packing pieces. All the accessories were wrapped in tissue paper - as shown below.

Original price 32/11, reducing to 29/11 in 1967.