Samuel Clemens’ 1835 Martin is a sight to behold. The instrument, reportedly valued at over $15 million, was a constant companion of the roving author. From Guitarsite:
Mark Twain ‘gigged’ with his 1835 Martin extensively as a singer guitarist, bringing it along to his many travels. Like the main protagonist of his popular novel: The Adventures of Huckleberry Finn, Mark Twain traveled far and wide, often with only his 1835 Martin, paper and ink to accompany him.
Take a look at this beauty over at Guitarsite.