I can't answer any questions about the authenticity of the cards. However, I don't believe the tin to be original at all. That ad was not used for the rounded corner cards. Instead it was given to store owners and used in newspapers to promote the one of the groups of 6 of the set of 13 Bond Bread cards. Im not at my computer now so I can't speak to which group of 6, but it 100% was not used to promote the round corner cards. Sorry
