My 2 Rarest Bottles with upside down Labels

Hi, I'm just showing off my 2 greatest finds. These 2 bottles are not Fake and both are not only unopened,but have their Labels put on Upside Down. The Porter Champlain Botttle was found about 23 year's ago by my older brother in a case of beer. The Labbat 50 bottle was found by a friend of mine while he was stocking up his bar fridge,about 10 years ago. I think that I am very lucky to have not 1 but 2 Beer Bottles with upside down labels on them. I also think that I am the only one with unopened Bottles with these features. I would really like to know if anyone else has something like this, so send me a pic. if you have something simular to my Bottles. But what I would really like to know is how Rare are these Bottles?