Found Two Interesting Coins

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Your post was moved to the appropriate forum for the proper attention.

Welcome to the forum.

That thick "bronze" coin is actually copper. Bronze came into use in 1860 because it was harder wearing than copper. In that condition it is not worth a lot of money, but has huge historic value.

This coin was minted in 1797 and came in two denominations, 1d and 2d. The 1d weighed 1oz ( approx 25g ) and the 2d weighed 2oz. For some years after they went out of use they often were used as weights on scales. They were minted by Matthew Boulton at his Soho ( Birmingham ) manufactory using steam power, a first for British regal coins and represented the cutting edge of world coin technology at the time.

The 1d was the first British copper regal 1 penny coin. The 2d holds the record for the heaviest regal circulation coin in Britain, and was unpopular because of its weight. ( There were some heavier copper 3d tokens ). They were known as cartwheels because of their design. The thick rim with incuse writing was an anti-counterfeiting feature. ( Up until that time British copper coins were plagued by underweight fakes. ) The reason they were so heavy was because at that time a coin was supposed to contain its own value in metal. Copper rose in price enormously over a short period of time due to the Napoleonic wars, which is why the 1807 penny is much lighter.

It wasn't until the great recoinage of 1816 that the government abandoned the idea of holding the face value of a coin in the metal. This concept affects our coins right up to today, which is why the newer low value coins are now copper or nickel coated steel instead of solid bronze or cupronickel. There was a brief time when the modern bronze 1p coin was worth slightly more in scrap value than at face value. I am not up with current scrap metal prices, so this could still be the case.

@Arw2, please show us the reverse of the Spanish coin as requested by january1may, which was minted in two different places in 1864.

The more common one might fetch 5 to 10 pounds (you can search Spain 25 Centimos 1864 on ebay and compare to yours)