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Originally Posted by
SoCal2NYC 
The important thing to look at is the size run and printer of the work you like. If something is signed; but, not of a limited numbered set it is pretty much just an autographed poster. Yes, they are not orginal works by the artist...but, it will have the artists signature on them and something more attainable at $1,000-$5,000 (you can find Picasso, Chagall and Dali in this price range) than an original for millions. I don't think you should discredit them for that fact. But, you can also raise the argument that for $3,000 you CAN get orginal art work from contemporary (not meaning the style of the art, but as in current living/breathing/producing artists) artists that has a higher chance of going up in value and could be more of an investment. A S/N (signed/numbered) litho is not suddenly going to skyrocket in value; but, it's not really going to go down either and if you hang onto it for a number of years and decide to sell it you could possibly squeeze a bit more out of it than you paid. Photography is a different ballgame and you can check out this link.
http://www.hkphotographs.com/collecting_guide.pdf
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Quote:
Originally Posted by
Violinist 
Aren't lithographs different because they are authorized and signed by the artist? I was just surprised that Picasso did this, and surprised how many of them are out there.
Lithographs are just one type of graphic work, like etchings, woodcuts, lino-cuts, offsets, serigraphs, potato-prints or whatever. A lithograph is made by using stones of a particular type as printing blocks. They can be signed and numbered, and will then generally be regarded as proper "independent" works, or not, in which case you have to regard them as well-printed posters. A signature on such a "poster" may help the value significantly, but it still won't get much more respect than any old museum poster. There's sort of a consensus about what size numbered editions in different techniques should have; as SoCal2NYC said, an edition around 3-500 is generally considered the limit for lithographs, while photographs these days are normally made in editions of up to 15-20. A sidenote: Dali's graphic works are very problematic to deal with; supposedly, he signed hundred, if not thousands, of sheets of blank print paper, which were later printed. There are also different "merchandising" deals around, which means that you can find the oddest things with Dali motifs and "facsimile signatures" printed on them. Most often, these things (dinner plates, t-shirts etc) are clearly just merchandise of the Franklin Mint type, but sometimes, "signed" small bronzes and the like pop up as well. The market is also rife with all-out Dali fakes. I'd have a Dali print thoroughly authenticated and valued before I paid for it, as lovely as they may be.