Aliens experts, need your help. Question about facehuggers.

So I have these 2 facehuggers that I bought I want to say around 2000 (around the time the modeler's resource article came out) off of ebay with the intention of building up a statis tube for that I really never got around to doing. I want to say they’re the Tsukuda Hobby version and not the Halcyon but I don’t know how to tell the difference or if there is a difference. I ‘ve heard a few different thing, the Tsukuda were rereleased and repackaged versions of the Halcyon, or that Tsukuda versions were a little bigger than 1:1.

Is there a way to tell the difference or what which one I own? I haven’t seen any marking or stamps on it.