It is interesting the effect a different minting method or metal can have on the appearance of a coin.
These are all the same year and design but they are ALL different :ok:
Lots of pics here so bear with me
Uncirculated coin from a mint set
(http://www.australian-coins.net/gallery/albums/userpics/10019/50unc1.jpg)
(http://www.australian-coins.net/gallery/albums/userpics/10019/50unc.jpg)
Specimen coin from a wedding set
(http://www.australian-coins.net/gallery/albums/userpics/10019/50sp1.jpg)
(http://www.australian-coins.net/gallery/albums/userpics/10019/50sp.jpg)
Proof coin from a proof set
(http://www.australian-coins.net/gallery/albums/userpics/10019/50pr1.jpg)
(http://www.australian-coins.net/gallery/albums/userpics/10019/50pr.jpg)
Silver proof coin from a Silver proof set
(http://www.australian-coins.net/gallery/albums/userpics/10019/50sil1.jpg)
(http://www.australian-coins.net/gallery/albums/userpics/10019/50sil.jpg)
Group shot
(http://www.australian-coins.net/gallery/albums/userpics/10019/50.jpg)