Questions about silver "Eisenhower Dollar" 1971

Hi,


1. Such "sets" in blisters are official sets of US Mint? (they are packed into a blister on US Mint?), or it is some "private" packing?

2. My coin is original?
Why I ask?! The fact that the blue token (and a cardboard) stated "Uncirculated". But in fact the coin has some attritions, and I would grade it no higher than XF.

3. If this coin is original and if it is packed into a blister on US Mint, then how I have to grade it?... Unc?

4. In Krause is specified Ag400.
But in some places I see "Composition: Outer layers - 80% Silver, 20% Copper; Center - 79% Copper, 21% Silver". What is it?

Regards,
Victor

This is US mint packaging.

I would say that you should grade the coin as it is, and not the fact that it was packaged by the mint.

The overall silver content of the coin is 40%. The outer layers (cladding) have 80% silver and the middle (core) has lower silver. Here is some additional information from about .com:
Silver: Outer layers: 80% silver and 20% copper; Core: 20.9% silver and 79.1% copper (total: 40% silver)
And from coinflation.com:
All of the silver "Ike" coins were minted at the San Francisco Mint in 1971, 1972, 1973, 1974, and 1976. These coins were either uncirculated or proof. Uncirculated coins came in cellophane with a blue plastic token in a blue envelope. Proof issues came in a proof set-like plastic case in a fancy brown wood colored box with a gold seal on back. The uncirculated coins are referred to as 'Blue Ikes' and the proofs as 'Brown Ikes'. Coins minted in 1975 and 1976 for the Bicentennial come with the quarter and the half dollar of that year. The uncirculated coins were sold by the Mint for three dollars; the proof version for ten dollars.
If the coin has never been out of the cellophane, I would grade it as 'Uncirculated.'