The England made pieces say "Made in England" and the Chinese pieces say "England 1883".Johnson Brother moved production over to China starting in 2004, they have been in continuous production since 1953 and have always been made by Johnson Brothers, which does not technically qualify the as reproductions. I've bought a lot of pieces on ebay, ( I haven't bought too much recently because I have just about everything! I do look at back stamps, but I do not get too obsessed with them, I can usually tell an older England piece from a newer England piece just by looking at the front.The marks you see on the back are essentially the signatures of the people decorated them.The green mark seems to appear on some of the earliest pieces, but I see a lot of red marks too.The bottoms are not finished and the quality is inferior.
They are still far better than the ones made in China (England 1883 variety).
The bottoms of those purchased off e Bay have a green mailbox and read The Friendly Village by Johnson Bros. The designs are not applied evenly to edges and the colors are blurred. Some of the newer pieces are made in china and also could be factory seconds what you would typically find in a factory outlet store.
Your best bet is to stay with the Brown back stampped pieces you will pay a bit more for them but the quality is far superior. The green stamps are obviously a later production since they are stamped microwave safe.
The back stamp on the original china has a brown mailbox and reads The Friendly Village, Mae in England, Johnson Bros.
The pattern stamped on each dish is very clear and distinct. Kay The green back stamp is legit This pattern has been in production for almost 60 years.