Imperial has a lot of cool packaging. Nice ones Josh & Dindo. Here's another from my collection. Also, had done some checking on packages that I have some years back. Seems that 1981 and prior was Mexico only. I do not recall seeing Vitro in Imperial pckaging but...? In 1981, here is a Mexico tag and Taiwan tag. 1985 has both Mexico and China mentioned. 1989 - China, India, Taiwan, Hong Kong. And another 1989 with Korea, Taiwan, Hong Kong. 1997 - India, Korea, China, Philippines, Taiwan and Hong Kong. Do note that some of the tags say "Marbles made in xxx" and "Packaged in YYY". So, I agree with Paula on all Imperial packaging since early to mid 1980s forward should be Asian.