Belgium 10 Euro 2007 Gold Proof

This 2007 Belgian 10 euro coin was struck in pure gold, a rarity for euro denominations that usually stick to base metals, making it a clever nod to traditional numismatic opulence.

Weighing in at about 6.22 grams with a diameter of 22 millimeters, it features a design by the Brussels mint that echoes Belgium's heraldic symbols, including the royal coat of arms on one side and a thematic element on the other—likely related to the EU presidency that year, though exact motifs vary in records. Proof issues like this one demand precision in striking, with mirrored fields and frosted details that collectors appreciate for their technical finesse.

Mintage figures are murky; official tallies from that era were never fully published, so we're left guessing at a few thousand pieces at most. As for why Belgium opted for gold then, it might have been to mark an anniversary or event, but that's speculation based on patterns.

Proving gold coins can still surprise, even in a digital age.