Quoted from sataneatscheese:
For example, if something sounds scammy, ask the seller if they can provide a photo with a bag of frozen vegetables under the glass to prove ownership.
You know how difficult it is to get good pictures let alone something as bizarre sounding as this? There are "good sellers" on this board who get bent should you happen to ask for a picture larger than 25k in size. The idea of asking for a unique shot of something and not getting a insulting answer is virtually nil.