Tomorrow is a big day for collectors who buy, sell and collect memorabilia. It’s the day that we’ll unveil a huge auction prices database, which covers virtually every auction from every auction house since Jan. 1, 2006. Everyone is represented and there is no item too large or too small in our database. It includes everything from a game-used Babe Ruth bat to Keith Hernandez signed plaque. If you can’t find it here, it hasn’t been sold.

The database is broken down into nearly 50 categories, ranging from “Autographs: Balls” to “Game-Used Jerseys” to “Tickets/Programs” to “Cards: Singles (pre-1930).” It includes results from 35 auction houses, and is broken down by sport, category, price, date sold and auction house.

How will you use the database? It depends on what your involvement in auctions is. Buyers can look through past results to predict what they can expect to pay for virtually any item. Sellers can learn what to expect if they sell their item by looking at past results for similar items. Collectors can put a value on the items in their collections by browsing for similar items.

Best of all, the database is free to everyone. You don’t have to pay, register or do anything other than go to www.scdauctions.com and start playing. There’s nearly 100,000 items already in the database and it’s updated soon after every auction ends. See you there.