I Thought I would lay out all the COO marks available on Stormtroopers. There are quite a few out there. Most Common are the 3 line Hong Kong as well as the 2 line Hong Kong, The Raised bar China is from ROTJ era it is legit. I still see people saying this is a fake, not true.
Several years age there were some recast bootlegs of the 2 line COO Stormtrooper being sold on Ebay, but these were super white, and had some distinct molding distinctions. I have seen none in the past few years out on the market.
Stormy’s have distinct molding sculpt differences , take a look at the heads and the back panels for starters.
some heads variation examples:
Stormy’s were molded i a variety of plastics form very transparent soft and rubbery white to a very dense white.
More info can be found in my guide :
Vintage Kenner Star Wars Action Figure Variations of North America
3rd Edition update now available :
check www.starwarsfigurevariations.com for more info