Each of our Monaco Blend Signature bottles and Mini Decanters are securely identified with a Prooftag Bubble Seal™. Those seals guarantee the origin of each bottle with a unique reference and fingerprint. Future owners will be able to verify the authenticity of each bottle by themselves. Prooftag Bubble Seals™ are high-end security seals used by the most exclusive wine producers around the world. Prooftag is proud to contribute to the success of this initiative by securing this very limited and exclusive series of bottles.