Real rocks adorn new stamps honoring world’s longest traffic tunnel – Linn’s Stamp News


Linn’s Stamp News

Real rocks adorn new stamps honoring world's longest traffic tunnel
Linn’s Stamp News
Two recent stamps from Switzerland not only commemorate the opening of the world's longest and deepest traffic tunnel, they also contain actual rock dust from the tunnel's construction. The Gotthard Base Tunnel opened June 1, and Swiss Post issued the …

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