Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hero :  excellent provenance on your Sun Motor !
I don’t have the Sun Motor (wish I did) but your boxes’ UPS label is very similar to my Solar #1 box. Your “Indian Tribal Series” origin UPS label clearly says your Sun Motor was shipped Jan 3 , 1979. And the address label has 11412 SM , may be a serial number (my Solar #1 is serial numbered on my label in the same spot).
Your Sun Motor is very likely late 1978 manufacture.

Swift Fox : now may be a good time to get a Solar #1. So many toy engine companies are going out of business lately it may be the twilight of the Solar era. Next year that Solar #1 may be called a Happy Ling Ling Panda Star motor from XIANJIANG