Coca-cola ads and other old ads.

If you are like me you are always looking for those old magazine ads from yesteryear.  Sometimes a good well preserved ad will bring in top dollar.

If you find an old magazine at the flea market or garage sale and you find a good ad or two.  .. buy the magazine. without commenting to the seller on the ad (s)

Another good tip is when you purchase an old magazine ad that has been placed in a sleeve with a cardboard backing.check to see what is on the other side of that page. Sometimes the ad you find on the other side is more valuable to a collector than the ad you bought. 

Example I recently bought a coke ad in a sleeve and when I pulled it out I discovered that it was not a single page but rather a center page of a magazine and aside from the coke ad I found 2 other full color ads that got me a higher selling price than the coke ad would have. 

So take my advice and always check those old ads before you put them on line.