What is a miser's purse and how does it work? Watch this short video to see Laura Camerlengo, author of the DesignFile e-book "The Miser's Purse," demonstrate how to use this nineteenth-century costume accessory.

Interested? Check out "The Miser's Purse," an e-book by Laura Camerlengo now available in iTunes, Amazon, and most places e-books are sold. "The Miser's Purse" is part of DesignFile, a new ebook series published by Smithsonian Cooper-Hewitt, National Design Museum.