We are unable to answer questions about the value of copies of the Declaration of Independence. But, you can use our Which Version is This, and Why Does it Matter? resource to help determine the importance of a copy, before going to a rare books and manuscripts dealer or appraiser to inquire about its value.
The 2004 movie National Treasure alleged (among other historically crazy things) that there is a secret map on the back of the Declaration of Independence. There is no map, but there is something on the back of the engrossed and signed parchment. A label at the bottom of the parchment reads, "Original Declaration of Independence dated 4th July 1776".
General George Washington was Commander of the Continental Army, and was defending New York City in July 1776. As instructed by John Hancock, Washington read the Declaration of Independence to the army on July 9th.
48 of the 56 signers were born in America. Two were born in England (Button Gwinnett, Robert Morris), two in Ireland (Thomas Stone, Matthew Thornton), two in Scotland (James Wilson, John Witherspoon), one in Northern Ireland (James Smith), and one in Wales (Francis Lewis).
The text of the Declaration of Independence, from "When in the course of human events" through "our sacred honor", is approximately 1,320 words long. Some versions of the text add, subtract, or change words, which affects the word count. If you include the title from the engrossed parchment, "In Congress, July 4, 1776. The unanimous Declaration of the thirteen united States of America," the total word count is 1,337. If you include the names of the 56 signers, the total word count is 1,458.