Belgium's zinc 5-franc pieces were a direct product of German occupation — the Reichskommissariat systematically stripped copper and nickel from Belgian circulation during the war years, forcing the National Bank to issue zinc coinage from 1941 onward. The Dutch-text variant reflects the linguistic division baked into Belgian monetary policy since the 1880s, with Flemish and French issues struck in parallel runs rather than a single bilingual design.
Zinc corrodes aggressively in humid conditions, and most surviving examples show at least some surface degradation. Clean specimens are genuinely difficult to source — not because mintages were low, but because the metal simply didn't survive peacetime pockets and drawers.
Belgium's zinc 5-franc pieces were a direct product of German occupation — the Reichskommissariat systematically stripped copper and nickel from Belgian circulation during the war years, forcing the National Bank to issue zinc coinage from 1941 onward. The Dutch-text variant reflects the linguistic division baked into Belgian monetary policy since the 1880s, with Flemish and French issues struck in parallel runs rather than a single bilingual design.
Zinc corrodes aggressively in humid conditions, and most surviving examples show at least some surface degradation. Clean specimens are genuinely difficult to source — not because mintages were low, but because the metal simply didn't survive peacetime pockets and drawers.