because it is shiny and the dirt doesn't stick on it
Assuming that you refer to the 1965 British Crown (Five Shilling) coin, they all look the same, it is only the finish that differs. The "satin finish" coin has a slightly dulled surface unlike the shiny mirrored surface of other coins. The satin finish coin was only minted in small quantities and would have been sold in a protective packaging to protect the finish of the coin.
Only Proof 1922 Peace dollars were struck in matte & satin finish and are very rare. But if you think you have one, take it to a coin dealer.
A satin finish on a proof coin gives the field a softer appearance and not the crisp mirror finish found on other proof coins.
A "specimen" coin is one which has a "special" finish, but not as high a quality finish as a "proof" coin. The 1965 Churchill "specimen" crown has a satin finish and was sold in limited quantities.
The surfaces of the coin will have a slightly matt finish. ie. it is not shiny like you would expect on regular coins. Also, at the time of issue, the coin would have been sold in some form of protective packaging to protect the finish. The packaging should have some reference to the metallic content of the coin and the fact that has a satin finish. There were very few of them minted.
A circulated coin will be exactly that, something you got in your change with little nicks and scratches all over it. The VIP Satin-finish coin is one that is struck using specially prepared dies giving the coin a slightly dulled, but high quality finish and, will be in some form of a presentation package or case.
They all have a satin finish.
Only the "VIP specimen" coins, of which very few were minted, were satin finish. The general circulation coin, of which 9.64 million were minted, was cupro-nickel and neither coin had any silver content. _______ At last you can realise the answer. I have a satin finish. Its an extremely rare coin R7 one to five examples known. My Mum went into a bank in 1965 to purchase what she thought would be the usual cupro nickel coin but was randomly handed the satin finish specimen and told to look after it as it would be valuable in years to come. Unfortunately Mum put it into her purse where it stayed for 35 years, when she gave it to me. It is the same as the cupro nickel strike but is a fine gold colour highly polished and a beautiful piece. Its certainly not in the finest condition with some scratching, but is one of a very few. My son is the one who now owns the coin and can sell if he needs to. _________ The satin finish coins were presented to VIPs, and just short of 1,000 of these were struck. You would need to take the coin to a decent dealer to confirm that it is one of the satin finish VIP coins. It is still a rare coin and I would expect a really nice specimen to achieve or exceed its catalogue value of £1,500.
Satin finish will look very nice, but won't be as shiny as the semi-gloss. I would recommend the satin finish because it won't show scratches as much.
There's a set of pictures at the site under Related Links.
Chrome is a mirror-like finish on metals and some plastics. "Satin" chrome has a finish that is NOT mirror-like but brushed or dull.
The finish. Most people prefer stainless with a high shine (polished) finish. Satin has a dull finish to it (unpolished)