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WWe receive hundreds of requests to authenticate posters every year and in most cases are happy to help where we can. If you have posters that you have had for many years that you have a question about, feel free to drop us a note and we will handle each request on a case by case basis.
If you just purchased a Woodstock poster, a Radio City Music Hall poster or something similar off of EBay or from a flea market or garage sale, please look it up on our site first. In many cases you will find the information there that will allow you to tell the difference. Just remember, fakes proliferate on the internet and that deal that was "too good to be true" usually is.
1) The Woodstock poster, both in 18" x 24" and 24" x 36 sizes. Look here for information about how to determine if they are real or not: http://www.classicposters.com/Joan_Baez/poster/Art_of_Rock/3.1
2) The Grateful Dead Radio City Music Hall poster. Unfortunately, these are difficult to tell apart unless you are very familiar with them. Our best advice is to only purchase these from a very knowledgeable dealer who will guarantee the authenticity.
3) The closing of Winterland "Blue Rose" poster with the Grateful Dead and New Riders of the Purple Sage. Here is the information: http://www.classicposters.com/Grateful_Dead/poster/Art_of_Rock/4.38
4) The AOR 3.116 Hawaiian Aoxomoxoa second print poster bootleg. Virtually every one of these we see is fake, including those sold by somewhat knowledgeable dealers. Here is the link for the information on these: http://www.classicposters.com/Grateful_Dead/poster/Art_of_Rock/3.116
5) The AOR 4.50 Led Zeppelin at Oakland Stadium poster. Originals of this piece are rare, fakes are not. Look here for information: http://www.classicposters.com/Led_Zeppelin/poster/Art_of_Rock/4.50
1) Look on our site to see if the information is there.
2) If you don't find the information, drop us an email regarding the poster. Unless you can identify the piece by our catalog number, include an image so we know what poster we are dealing with.
3) In most cases, we will need to see the actual poster. You will need to pay postage and insurance both ways, in addition to an authentication fee that varies depending on the item, regardless of whether it is real or not.
4) We will not try to authenticate based on photographs.
5) Please DO NOT send us any posters for authentication or sale without asking us first.