An 1805 Draped Bust U.S. Large Cent, graded as MS-60 starts at $3,000.00. This value dramatically changes depending on the color, contact marks and surface condition. If the coin actually is a Mint State example it needs to be seen for an accurate assessment of the value.
All early U.S. coins need to be seen for an accurate assessment. The 1805 Draped Bust Half Cent has 3 varieties and the values are very different. And the grade and condition of the coin very much affects the value. If it's still in collectible condition it would have a minumin value of $50.00. Take to a coin dealer for a better idea of value.
The U.S. did not strike any silver dollars for circulation between 1804 and 1835 inclusive. If you have a coin dated 1805 it's a counterfeit. If you have a different date, please post a new question.
No US silver dollars were minted for circulation from 1804 to 1835 inclusive, and Trade dollars were only minted from 1873 to 1885. If your coin says ONE DOLLAR and is dated 1805 it's either a fantasy coin, a bullion "round" or one of the many fakes...
Have you looked on the reverse side of the coin? Does it say 50c on the back? There were no US silver dollars minted from 1805 to 1835 inclusive.
An Hibernia (Irish) 1805 copper Halfpenny (George III), circulated but still in good condition, might fetch anything from £3 to £50 GBP. An Hibernia (Irish) 1805 copper Halfpenny (George III)(Proof FDC), circulated but still in good condition, might fetch anything up to £175 GBP. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in bronzed copper FDC), circulated but still in good condition, might fetch anything up to £175 GBP. An Hibernia (Irish) 1805 Halfpenny (KG III)(Proof in bronzed copper FDC - plain edge), circulated but still in good condition, might fetch anything up to £150 GBP. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in gilt copper FDC), circulated but still in good condition, might fetch anything up to £275 GBP. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in gilt copper FDC on a thick flan), is considered extremely rare. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in silver FDC), circulated but still in good condition, might fetch anything up to £1,500 GBP. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in gold FDC), is considered extremely rare. An Hibernia (Irish) 1805 Halfpenny (George III)(Proof in gold FDC - plain edge), is considered extremely rare. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
Hibernia is the ancient name for Ireland. There were two Hibernia coins minted in 1805 with that inscription, being the copper Penny and Halfpenny. They are both just about identical, the Penny being larger than the Halfpenny. A Hibernia (Irish) 1805 copper Penny (KG III)(crowned harp), circulated but still in good condition, might fetch anything from £10 to £150 GBP. A Hibernia (Irish) 1805 copper Halfpenny (KG III)(crowned harp), circulated but still in good condition, might fetch anything from £3 to £50 GBP. A reputable coin dealer will be able to positively identify your coin and give a more accurate valuation.
An Hibernia (Irish) 1805 copper Penny (George III), circulated but still in good condition, might fetch anything from £10 to £150 GBP. An Hibernia (Irish) 1805 copper Penny (George III)(Proof FDC), circulated but still in good condition, might fetch anything up to £200 GBP. An Hibernia (Irish) 1805 Penny (George III)(Proof in bronzed copper FDC), circulated but still in good condition, might fetch anything up to £200 GBP. An Hibernia (Irish) 1805 Penny (George III)(Proof in gilt copper FDC), circulated but still in good condition, might fetch anything up to £300 GBP. An Hibernia (Irish) 1805 Penny (George III)(Proof in silver FDC), circulated but still in good condition, might fetch anything up to £2,000 GBP. An Hibernia (Irish) 1805 Penny (George III)(Proof in gold FDC), circulated but still in good condition, might fetch anything up to £10,000 GBP. An Hibernia (Irish) 1805 Penny (George III)(Proof FDC)(reverse muled with English Penny reverse), circulated but still in good condition, might fetch anything up to £2,000 GBP. A reputable coin dealer will be able to give a more accurate valuation.
At the very least $200 depending on the condition. Can be up to $4000
The coin you have described, dated 1805 with the inscription "dei gratia carolus IIII", is a Spanish colonial coin. The value of this coin can vary depending on its condition, rarity, and demand among collectors. It is recommended to have the coin appraised by a professional numismatist to determine its exact value.
Hibernia is the ancient name for Ireland.
A Hibernia 1776 copper Halfpenny (George III), circulated but still in good condition, might fetch anything from £25 to £400 GBP. A reputable coin dealer will be able to give a more accurate valuation.
An 1805 Draped Bust U.S. Large Cent, graded as MS-60 starts at $3,000.00. This value dramatically changes depending on the color, contact marks and surface condition. If the coin actually is a Mint State example it needs to be seen for an accurate assessment of the value.
An Hibernia (Irish) 1823 copper Halfpenny, circulated but still in good condition, might fetch anything from £5 to £25 GBP. An Hibernia (Irish) 1823 copper Halfpenny (Proof FDC), uncirculated and in absolute mint condition could fetch up to £200 GBP. A reputable coin dealer will be able to give a more accurate valuation.
The only British coin issued in 1805 was the gold Half-Guinea coin. A British 1805 Half-Guinea is considered to be extremely rare. A reputable coin dealer will be able to give a more accurate valuation.
All early U.S. coins need to be seen for an accurate assessment. The 1805 Draped Bust Half Cent has 3 varieties and the values are very different. And the grade and condition of the coin very much affects the value. If it's still in collectible condition it would have a minumin value of $50.00. Take to a coin dealer for a better idea of value.
The U.S. did not strike any silver dollars for circulation between 1804 and 1835 inclusive. If you have a coin dated 1805 it's a counterfeit. If you have a different date, please post a new question.