Apparently Gaia Unicron can become a helmet for Armada Unicron....

Could someone tell me what version of the Dr.Wu sword megatron is holding?

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Because here are the only versions I know of...

-Silver with blue Gemstone "Prima's Sword"

-Gold with red Gemstone "one prime is holding, presumable Nova's Blade"

-Gunmetal/black with purpler Gemstone "Dark StarSaber"

-Purple with yellow Gemstone. "Shattered Glass"

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The one megatron is holding in the pictures is like a flat grey with yellow gem... Sneak peek perhaps?