Found picture of Jetstar 3 Ind gas. If serial number looked closely it has the Jet then Star. Also found another Jet 3 Ind diesel and it also has star. Another fellow collector has later 1970 gas and has no star just Jetstar 3. Theory is all sn prefix 308 gas models (191 made) and 309 diesel (50 made) had star symbol in model number. All later models said Jetstar 3 and there serial numbers were mixed in 283 and 284. No records of how many were made in final 3 years. 1966-67 industrials were not brown belly or yellow. Chassis was painted Flint Grey according to manual.