The Inverted Jenny (also known as an Upside Down Jenny or Jenny Invert) is a United States postage stamp first issued on May 10, 1918 in which the image of the Curtiss JN-4 airplane in the center of the design appears upside-down; it is probably the most famous error in American philately.(From Wikipedia)
Because the center image was printed first, with the frame added second; it is actually the frame that is printed upside-down, not the center image of the Jenny.
So read carefully and think twice what will affect your collection.
Now think about chances of all expensive British Indian Stamps available and think what are chances you are getting forgery or fake like "Inverted Jenny".
Look at following screenshot were none of the seller has not mentioned about Replica or Facsimile so I think it's Genuine.
But my question is what are the chances of getting Replica or Facsimile like we see on top ?
2 weeks ago I wrote blog post about King George stamps and King Edward stamp related to chances of forgery. Please read by clicking following link to understand overall picture.