Here are some images of Glencoe/ITC McDonnell 1/32 scale XV-1 Convertiplane from the late 1950's molds.
From Wikipedia "
The McDonnell XV-1 was an experimental compound helicopter, designated as a convertiplane, developed for a joint research program between the United States Air Force and the United States Army to explore technologies to develop an aircraft that could take off and land like a helicopter but fly at faster airspeeds, similar to a conventional airplane.
The XV-1 would reach a speed of 200 mph (322 km/h), faster than any
previous rotorcraft, but the program was terminated due to the
complexity of the technology which gave only a modest gain in
from aluminum, the XV-1 fuselage consisted of a streamlined tube
mounted on skid landing gear, with a rear-mounted engine and a pusher
propeller. It also had high aspect ratio,
tapered, stub wings mounted high on the fuselage. In turn, twin
tailbooms and twin vertical surfaces, inter-connected by a horizontal
stabilizer elevator, were mounted to the wings. A three-bladed main
rotor powered by blade tip pressure jets was mounted on top of the
fuselage, above the wing roots.
The convertiplane featured a single Continental-built R-975
radial piston engine that powered twin air compressors. The
compressors pumped air via ducts to the main rotor for vertical flight,
while the engine drove the two-bladed pusher propeller for horizontal
flight. During forward flight the main rotor is permitted to
autorotate, which provides some additional lift.
cabin was covered almost entirely with Plexiglas windows providing
visibility in all directions, except directly underneath the aircraft.
The cockpit consisted of tandem pilot and copilot stations, or the
aircraft could accommodate a pilot and three passengers, or a pilot and