$5 2001 Federation Hologram Finale Silver Proof
At the center of the reverse design is a colour hologram - the first on an Australian coin. Depending on the angle of view two separate images are visible. One depicts the Federation Rotunda while the other is a map of Australia showing the States and Territories in different colours. The hologram utilises a method pioneered and patented by Australia's CSIRO (Commonwealth Scientific & Industrial Research Organisation) known as EXELGRAM. The optically variable properties of the image are produced by an extremely fine pattern of ridges. This ridge pattern known as a 'diffraction grating' causes light striking the image to be split into its component colours according to the spacing of the ridges in different parts of the design.
Being the first Australian coin to feature a holographic design and a mintage of 10 000 this coin sold out extremely fast after issue back in 2001.
Boxes may have imperfections, second quality
Original: $225.00
-70%$225.00
$67.50Product Information
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Description
At the center of the reverse design is a colour hologram - the first on an Australian coin. Depending on the angle of view two separate images are visible. One depicts the Federation Rotunda while the other is a map of Australia showing the States and Territories in different colours. The hologram utilises a method pioneered and patented by Australia's CSIRO (Commonwealth Scientific & Industrial Research Organisation) known as EXELGRAM. The optically variable properties of the image are produced by an extremely fine pattern of ridges. This ridge pattern known as a 'diffraction grating' causes light striking the image to be split into its component colours according to the spacing of the ridges in different parts of the design.
Being the first Australian coin to feature a holographic design and a mintage of 10 000 this coin sold out extremely fast after issue back in 2001.
Boxes may have imperfections, second quality
