Signed and dated. Unique artwork signed and dated on the reverse.

Signed and numbered. Edited artwork signed and numbered on the reverse.

Signed with high quality acrylic marker on the reverse, dated on the reverse or numbered on the reverse. Information regarding title, dated, medium, size, technical details, place, edition number and hologram number on label on reverse.

The artwork has two identically numbered holograms are fixed one directly on reverse side of the artwork and the second hologram serialized on the certificate of authenticity, to protect the security and genuineness. The Hahnemühle certificate is made of premium deckle edged mould-made paper with Hahnemühle watermark and fluorescent security fiber. The combination of certificate and hologram assures that each Certificate of Authenticity relates to one particular piece of art. It is a unique protection and a valuable identification document.