GigaTest Labs Microwave RF High Frequency ? Test Fixture Set? or?? The only part # or name I see is on the little part, which has the # GTL-201-103 10X 500Ω. There are no other identifying markings. In a Plastic case, which I assume at some point had a label that fell off long ago. Lots of gold plating. 

If someone recognizes what this is, please let me know. Thanks!

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