Not Kingsize but look to be 1/43 Lesney - Got these at auction. Some say 1976 Lesney Products Corp. Moonachie NJ , All plastic and made in Hong Kong. Others are from 1973 and say Lesney Products but no place of origin only Hong Kong.

http://i82.photobucket.com/albums/j252/Dave_anto364/L2.jpg

http://i82.photobucket.com/albums/j252/Dave_anto364/L1.jpg

http://i82.photobucket.com/albums/j252/Dave_anto364/L3.jpg