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Message:: [QUOTE="GDJMSP, post: 1811780, member: 112"]Proof =  Proof, Proof is a method of manufacture, not a gradeFDC = usually MS65 or aboveUncirculated = usually MS6o to MS64Good EF =  EF45, though most use XF45EF=  XF40Good VF = usually VF30 or VF35VF = usually VF20 or VF25Good Fine = F15Fine = F12Fair = G4 or G6 It's pretty simple really, Europeans use an adjectival system and the US uses a numerical system. But both systems are basically the same and with few exceptions have equally sized grade ranges. The Europeans just use adjectives, and when they want to put a finer point on the grade they will use an additional adjective. Example, the European Good VF can be used to equate to VF30 and a Very Good VF can equate to VF35. For people with the knowledge, yes it is easy. And no they are most definitely not all natural. No, usually a coin being slabbed slows down the toning process. This is because the slab, and proper storage slows down the air flow that can get to the coin. But slabs are not airtight, so a coin in a slab can indeed tone, but usually at a much slower rate than one that slabbed. But it is important to note that a good hard plastic coin holder will do the same thing that a slab will do in this regard.[/QUOTE]