Bicarbonate is a buffer-it adjusts acidity. Bicarbonate is in the blood naturally. The body uses it to control it's acidity. Bicarbonate is used in dialysis to maintain the proper acid balance in the body.icarbonate is in the blood naturally. The body uses it to control it's acidity. Bicarbonate is used in dialysis to maintain the proper acid balance in the body.
CoinTrackers.com has estimated the 1921 Morgan Silver Dollar value at an average of $31, one in certified mint state (MS+) could be worth $171. (see details)... Type: Morgan Silver Dollar. Year: 1921. Mint Mark: No mint mark.
Silver is currently (April 2011) worth about $42 per ounce and that keeps a floor on prices. The years below tend to go for several hundred dollars each in Extra Fine or better shape so keep an eye out, but this is only a broad guide to seperate the most common from the more rare. These are the rare dates.