I have an extensive baseball card collection for sale some are signed who do I  contact?
399372
I did the same thing and baseball cards are not worth anything unless someone is looking for # 1 card they would like to have and that's rare, only if they wish to have and its very hard to find that someone. But i do wish you luck. I had over 10,000 card including Willie Mays Rookie card i lost alot of money buying them all.\n\nMake sure you corners are in good shape for when you do find someone this helps alot i wish you the best on selling your cards. Get a beckett price book so you will not get ripped off.
622159
Go to a card collecting shop
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Some information you might be interested in.    Good luck too as collecting is a lot of fun.\n\nSports Memorabilia\nLooking for Sports Memorabilia?\nFor six years now, 1clicksportsmemorabilia.com has provided quality links and information on sports memorabilia. We offer links to online retailers of products licensed by sports leagues such as the NBA (National Basketball League), MLB (Major League Baseball), NFL (National Football League) and the NHL (National Hockey League). All memorabilia to which we link is guaranteed authentic and they have relationships with the nation’s top providers of genuine, signed memorabilia. Authenticity is generated only through signings or witnessed by an agent of the top memorabilia vendors. Every item of memorabilia is accompanied by a certificate of authenticity and is guaranteed by the company.\n\nOne site we recommend for selection, price and authenticity is sports memorabilia. This site carries great baseball memorabilia, football memorabilia, basketball memorabilia, hockey memorabilia, and boxing memorabilia \n\nThe exciting world of sports memorabilia is one of America’s fastest growing markets. Collectors snap up items relating to their favorite stars, both as an investment and a fun, interactive hobby. There’s nothing quite like holding a dusty, game-used bat or a dented football helmet. Whether you follow baseball, basketball, football, hockey, soccer or any of the other thrilling professional sports, athletes have never performed better. And it’s never too late to get on the sports memorabilia bandwagon—the next Lebron James or Derek Jeter could be starting his rookie year with your home team. Here’s a good place for \n\nSports collecting has been making headlines for the wrong reasons too. Unfortunately, unscrupulous dealers pass off forged autographs and fakes every day. Recent, highly publicized surveys estimate that up to 50% of sports memorabilia online is fake and many people have horror stories about ordering “certified” sports merchandise on ebay, only to find that they could have printed the “certificate of authenticity” on their own color printer. To combat fraud, athletes now make a practice of signing items only on official signing days. Reputable dealers employ a third party agent to witness the signing and affix the item with a unique, numbered hologram. This hologram is entered into the company database, making for an easy-to-track, fraud-proof system. A fan can still luck out and get an autograph at the ballpark, but athletes are well aware of the dishonest resale business that’s sprung up around their signatures, and they will try to personalize all items signed for fans. If a dealer claims to have gotten items signed “in the locker room,” it’s a pretty good guess that they’re fake. Take a look at autographed sports memorabilia and authentic sports memorabilia, and sports display cases.\n\nBut a savvy sports collectable shopper—and if you just read the last paragraph you now qualify—will have no trouble finding thrilling items to help build their collection at any price range. The history of sports memorabilia collecting goes back almost as far as the history of sports in America. Baseball is regarded as the first, true collectors’ sport. Larger than life icons like Babe Ruth and Mickey Mantle became American symbols and everyone wanted a piece of the action. Professional football came later, after it was regarded as a college sport for many years. Today, basketball has never been hotter, with many stars recording songs and dating high-profile celebrities. Collectors looking for a bargain might want to turn to the growing MLS—Major League Soccer—where there’s talent and bargains to go around. Or maybe the WWF? Wrestling collectables are reasonably priced and the squared circle has proven its enduring popularity. The same goes for NASCAR, where passionate fans can buy everything from flags and coolers to replica cars and figur
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If you are interested in selling your baseball cards, I suggest that you initially try to find a collector who is willing to purchase your entire collection.  That would be the best way for you to make some return on your investment.\n\nIf you are planning on selling them via an online auction site like ebay.com, you may not be able to sell them for the price that you want as the bidders would dictate on how high the final bid would be.  Worst yet, if no one were to bid on your card, you would still have to pay ebay's fees for listing your card.\n\nThe best way to appraise your cards is to buy baseball magazines that list the value of baseball cards like Beckett Baseball Magazine.  The link below may help.  Good Luck!\n\nHope this was helpful.
456336
Beckett charges. Best bet would be to compare your card to others on e-bay.
263190
If you want to pay for them, try Ebay.  If you want them for free, write the team and ask for the autograph from the player you want.  This method takes a long time and you don't always hear back however.
202167
there used to be a company called beckett. they also had some books out on all kinds of sports cards and what they're worth. check at a book store or a trading card store
599100
I have to admit to not knowing a lot about baseball cards but the best way to find out how much things are worth is to find how much others are selling for.  Check froogle for your exact card, and possibly ebay as well.\n\n(I did a rough search and came up with a lot of different nolan ryan cards for sale from $2.oo to $450 ! http://froogle.google.com/froogle?q=nolan+ryan+baseball+card&btnG=Search  )
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The best sources are those who have nothing to gain from you.\n\nI'd begin with the Beckett Price Guides -- they come out every month as well as a Beckett Baseball Plus and Beckett Football Plus, which is larger, (has more cards).   The Plus comes out every two months.\n\nBeckett also has an online service.   There's a fee, but you can do an inventory on your cards.   That's something to consider if you have a LOT.\n\nWhich of the cards is most wanted depends on how hot the player is today.   Mark McGwire today, is not as "wanted" as the year he broke Roger Maris' record.\n\nRyan Leaf was most wanted when he was drafted, and well, you know what he's worth today!\n\nOne final thing -- don't be so quick to sell your cards.  If you're new at this, you might get taken advantage of by an opportunistic dealer.   Or, you might price the card too low, or sell it before the athlete peaks.\n\nAnd, if you're like most collectors, you didn't start buying cards for the money.   They have sentimental value, and believe me, as the years go by, those rare cards will increase in value.
963641
Have you contacted Sports Collectors Digest ?
376029
Divide them up into Team Lots and list them on eBay. Your late 80's cards are next to worthless and the only way you're going to be able to unload them is to mix them in with cards of more appeal; team lots is the best way to go.
766433
Get advice from a baseball card shop owner.
917693
Since when are card shows popular ......do it on EBAY or if you are patient....wait for a few years so the value increases and then GO TO EBAY or A Collector Store.
442440
Assuming you mean from living people, the first key is to be polite ... very, very polite. Don Mattingly, a former Yankee player and current coach, always said he would sign autographs for people who were polite and asked by calling him sir or Mr. Mattingly, but tried to skip over the people just yelling sign this or sticking things in front of him. Even if you are just writing a letter, be polite and your chances of getting a response improve greatly over going in the trash can. Letters can generally be sent in care of the person's agent or, in the case of athletes, team. Address info for both can generally be found online.\n\nThe next thing is to look and see if the person has an exclusive autograph contract with any companies. Usually, that means they won't sign anything, anywhere unless it is in conjunction with an event set up by the company they work for. Usually there is a pretty steep charge (anywhere from $25, $50 and up per autograph) and it can only be done on approved merchandise (usually made by the company they work for, such as Upper Deck only allowing Upper Deck trading cards to be signed). If this is the case, watch the websites of the player and that company to see if there are any signings in your area.\n\nThat will get you started ... good luck and good hunting.
931647
Take it to a sports collector store and and get them appraised.  You could also buy a Beckett magazine.  They have the values of cards.  It is hard to say the value of a card without knowing the year, maker, condition, and card number.
513894
ONLY GO TO A MAJOR AUCTION HOUSE FOR APPRAISAL.  THERE ARE MANY PROBLEMS IN THE COLLECTIBLE ARENA.  CALL SOTHEBY'S IN NEW YORK.  THEY CAN ASSES IT OR REFER YOU TO A REPUTABLE ESTABLISHMENT.  THAT BALL IS WORTH MONEY EVEN IF NOT SIGNED BY THE WHOLE TEAM!  BECKETT AND PSA ARE NOT WHO I WOULD SEND THIS TOO!
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Take the stack to a local card collector store.\n\nAsk them to see how much they are worth.\n\nKeep a mental note on which cards they tend to look at the longest.\n\nThey will usually give you a low-ball offer.  Don't take it.\n\nTake the cards they look at the longest and then search on Beckett.com to find their value.