What role did coins and stamps play in communication and trade during the 19th and early 20th centuries, and how has that role evolved with the advent of digital currencies and electronic communication?

What role did coins and stamps play in communication and trade during the 19th and early 20th centuries, and how has that role evolved with the advent of digital currencies and electronic communication?
Admin on May 13 2025 at 01:18 AM in Coins & Stamps - Other
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