This concept car has a metal base, two exposed chrome plastic engines on the sides, black plastic interior, blue windows, and rsw. Made in Hong Kong.
Similar castings: TwinMill (1969), TwinMill (1973 Shell Promo), TwinMill (1993)
a. orange, red, white, and blue tampo $35 – 60
a2. orange, as a, bw (1977) 20 – 40
b. chrome, as a, rsw, Super Chromes 6-pack (1977) 50 – NA
b2. chrome, as b, bw (1977) 40 – NA