That's an interesting question: what's the relationship between the market place of the Design Addict site and its forum? Or in other words, would it make sense that a shop advertising here asks about ID to its potential customers?
I have not seen that particular chair. But similar to those:
https://www.ebay-kleinanzeigen.de/s-anzeige/50er-60er-jahre-stuehle-daen...
Cheers
Ernest.
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