Those of you who collect vintage MOC, what standards, if any, did you set before adding to your collection? Unpunched, clear bubble, no price sticker, special offer sticker, etc.
For myself, I only require a piece with a clear bubble and no tears or serious creases to the card. A few stress marks or a small price sticker are no problem. I kind of like those cards that have a small price sticker on them -- gives them a little character, IMO. I also don't mind a punched card.
I don't mind special offer stickers, either, as long as they don't obscure the image on the card too much. Some of them -- the "coin" offers in particular, unless I am mistaken -- are way too big! But some of them are cool, especially if they have a real "connection" to the figure they are stuck on. My ROTJ Vader has a free Anakin Skywalker sticker on the bottom right of the card, for example, which I think is a cool tie-in.
I guess the main selling points for me are a clear, firmly attached bubble, and a card in fairly decent shape. What are yours?