HYDRO-JET PISTLO - NU-DELL - USA
Red plastic angular space water pistol with muzzle rings ana a small rocket shaped sight. Hydro Jet Pistol molded in the sides. 7 ins. There are two distinct version: one with the water tank attached by a tube (the yellow tank has a shoulder strap) and a later tankless version which holds its own water supply.
Made in the 1950's by Nu-Dell Plastics Corp. Chicago, Ill, USA