Well done, Trader. That is quite the display you have there. Now you have to go on
ebay and buy some "Reproductions" to finish it off...

One thing I noticed about the forgeries is, they're not all that difficult to spot once you know what you're looking for. Of course, knowing is key. Otherwise it's a different ball game.
I'm curious about your type V category. Specifically the 6c, as it looks, at least from the picture, to be more similar to mine than the others I found... Are they "poor quality" originals, in the sense that they pass the forgery tests, or do they fail one of the forgery tests as well?