1971-S $1 Silver, DCAM PR68DCAM 认证号30630238, PCGS号97428

"Ice Blue Monster" - This is most likely one of the "gassed" Ikes to come out of that infamous monster toned Ike hoard that came to market a few years back. Someone placed a bunch of these proof Ikes, still in OGP, in a large sack and gassed them for a time in an enclosed setting. A lot of them exhibited this characteristic bulls-eye toning with psychedelic colors. Naturally, they just don't tone this way. Rather, the toning begins on the periphery and works its way in. Rob Erzerman commentary: "At least one large trash bag of 71-s Brown packs were AT'ed somewhere in the mid-west some years ago, best guess is several hundred exist. The creator threw a handful of elemental sulfur in the bag and left the bag in his garage attic for one or two hot summers. So, you're correct, AT, gassed. I have a couple of these I bought for $30 back when Sego had a goodly number he was selling as NT (close to 10 years ago). While colors vary from one to another, the over-the-top iridescence makes them instantly recognizable. Rob"

Ron Guth

Up until 1971, the Mint made only Proof Sets and Mint Sets as special collectibles for sale to the public.  With the introduction of the Eisenhower Dollar in 1971, the Mint offered 40% silver versions of the new Dollar in Uncirculated and Proof condition, but only from the San Francisco Mint.  The Proof versions were sold in a hard plastic case inside of a brown slipcover box.  The 40% alloy, the special case, and the opportunity to purchase s aingle Proof coin for the first time in more than a century proved a considerable draw, and collectors snapped up more than four million of these innovative coins.

The majority of the 1971-S Proof Silver "Ikes" remain in superb condition, however examples in the top grade of PR70DCAM are extremely rare relatiive to the total population.