Some imperial stuff needed to be identified

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Hi Everybody,

need some help with the following stuff.
What is it and what is it´s approx. value.
Any offers are also welcome as I don´t want to keep it.

First a part of a pickelhaube - what I believe

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reverse

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Belt with buckle

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reverse belt and buckle

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another buckle (there are 2 of them)

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and reverse

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what about this one - I have no idea what it is ???

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reverse of unknown badge