As there have been a couple of recent threads with concerns about fake Carnival, I thought it would be beneficial to show you a fake "Northwood" Peacocks bowl.http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7419173087
I don't think the seller realises that it is a fake and she states she is unsure of its past. Note she mentions it has a letter N on the base. Some of the fakes have a fairly chunky looking letter N moulded on them. The genuine Northwood mark was a letter N underlined in a circle.
You can see a green Peacocks bowl here for comparison - it is a genuine one.http://www.geocities.com/carni_glass_uk_2000/what_is.html
The edge is different, but that's not a clue in this case (the edges on both fake and genuine article may be piecrust as this green one is, or just ruffled). Note how the pattern on the fake fills the bowl more. The design goes closer to the edge as well, on the fake.
There are lots of other differences, but they are more tricky to explain and demonstrate without actually having the pieces to hand. However, a good look at the Far Eastern fake Peacocks may be useful for anyone who is interested.