I sent a second email last week to Relics of the Reich (to both emailaddresses in the US and the UK), explaining how I got the goblet and asking about the provenance. I also offered to pay for a written COA. Unfortunately I didn't get a reply so far.

If there is someone who would be able and willing to help me to get in touch with the owners of Relics of the Reich, I would be grateful.

Thanks,

Frederico