Franklin Mint Question. What is the difference between 'Special Unc' and Proof? [gelöst]

 Hi Folks! I have researched this elsewhere on the ‘net and by asking friends, but I cannot come up with a solution. What is the difference between a Franklin Mint ‘Special Uncirculated’ coin, and a proof one? The pictures show a PNG 20 toea in its holder. The marks are on the holder rather than the coin.
To me, this coin appears to be Proof, with a mirror-like finish. But is it? I ask this because, for my life, I cannot find out what ‘Special Uncirculated’ actually means.
Please help this frustrated, not-quite-a-novice, who should know the answer.
Thanks, AY

 P.S. I also can't work out how to load up photos, and then, get to the text option. This is why there are three photos.

'proof' is the name of a coin minting technique. 'Special Unc' is mostly used for commemorative coins. The embossed parts of 'Proof' coins are matte. That's what I know, but I'm not sure 😅

Thanks Gencay! I'm aware of what a proof coin is and have some idea of how it's done. It's just the Special Uncirculated part that gets me. It becomes even more confusing when dealers break up sets for sale, or only have part of a set extant and do not say so. Cheers, AY

From SCWC for Papua New Guinea and other countries that FM produced coins for:

MINT MARK
FM - Franklin Mint, U.S.A.
NOTE: From 1975-1985 the Franklin Mint produced coinage in up to 3 different qualities. Qualities of issue are designated in ( ) after each date and are defined as follows:
(M) MATTE - Normal circulation strike or a dull finish produced by sandblasting special uncirculated (polish fi nish) or proof quality dies.
(U) SPECIAL UNCIRCULATED - Polished or prooflike in appearance without any frosted features.
(P) PROOF - The highest quality obtainable having mirrorlike fields and frosted features.

Thanks rsirian1! This is the information I need, and I will record it. To me, the coin shown appears to have frosted features on the bird and drum, thus making it Proof. Could you please confirm this so I can get it exactly right? I feel that incorrectly entering coins is a disservice to the Numista catalogue, and I don't want to do it. I do not ‘wish’ it to be either one or the other, only to get it right.

 Thanks a million, AY

You're welcome. I tend to agree but you're the best one to determine what you have since you have the coin in hand.  For comparison here's a proof:

Thanks for the photo, rsirian1. I've popped the coin from its holder and I am now certain that it's PROOF. I want to be careful, too, as I occasionally sell coins and do not want to misrepresent them. The amount of ‘Proof’ coins I've bought that, upon closer inspection, are merely BU, is unfortunate, but not staggering. Not Franklin Mint coins, but others. I tend not to get bitten so often, anymore.

 I now have some changes to make…

 Thanks for your help, and I hope this is useful to others.

 With respect, and best regards, Arthur Yapp

P.S. Now that the coin is out of its holder, I can see that the frosting extends to the Cassowary, grass, and all lettering. Overhandled flips are a nuisance. I can now get it into one of my own. AY