Though mothers have been revered for centuries, the greeting card industry didn't have an official holiday to promote until 1914.

From clutter to coveted collectibles-a collector cleaned his basement and found out that one's man trash is truly another's treasure. Two burlap sacks full of old cans that were taking up space in a New Jersey man's attic went to Cyr Auction Company in Maine with the hope they would bring a few thousand dollars.

The Kovels' Top Twenty list is based on the results of hundreds of thousands of searches that took place on its website during the month of March 2008. Visitors to Kovels.com are are always interested in jewelry prices, and in March it was the most searched-for category.

Many visitors to Kovels.com this week were searching for majolica items.