I would think $15 to $25 each... all are common dates with high mintage figures. With the price of silver where it is today (uner $10), maybe a little less. I picked up three nice common Morgans today (at the local coin shop) for $14 each.
How can I find out what the rare dates for these are.. I sometimes see them for sale in the UK. Best wishes, Mike.
It's just where the coin was made. P means Philadelphia, D means Denver and S means San Francisco. For example, pre-1965 quarters have the mint mark on the reverse below the wreath and the absence of a mark indicates P. 1965-67 had no mint marks and 1968 until now has it on the obverse just to the right of Washington's hair. Your quarters are: 1944-D 1945 (Philadelphia) 1952-D 1957-D 1976 (Philadelphia) Different coins have mint marks in different places and starting in the 1980s (I'm not exactly sure when) they started using the letter P for Philadelphia rather than not using anything. Older coins have different mint marks as well. You may see an "O" for New Orleans or a "CC" for Carson City. Older gold also has a "C" for Charlotte or a "D" for Dahlonega. Also, a "W" on newer commemorative coins indicates the West Point mint. The O, CC, D, and C mints have long stopped making coins. O stopped in 1909, CC stopped in 1893, C and D stopped in 1861.
There are many dates with Morgan's that are considered key or semi-key dates. However, Morgan's are heavily counterfeited because of their popularity and value so be very careful when buying raw key dates. Here is what I consider key and semi-key dates for the Morgan series (not including proofs...all proofs are very rare, 1895 is the most valuable proof): Key 1881-CC 1884-S (only in MS grades, common in AU or lower) 1885-CC 1886-O (only in high MS grades, common in low MS or lower). 1889-CC 1893 1893-CC 1893-O 1893-S (key of whole set) 1894 1895-O 1895-S 1901 (only in MS grades or higher, common in AU or lower) Semi-Key 1878-CC 1879-CC 1880-CC 1882-CC 1883-CC 1884-CC 1888-S 1890-CC 1891-CC 1892-CC 1894-O 1894-S 1896-S 1899 1902-S 1903-O 1903-S 1904-S Now, this is quite a list. I'm sure I could cut it down quite a bit as some "semi-keys" are worth quite a bit more than others. But, this is just my opinion of what the keys are semi keys are. If you want a list or true critical key coins for the set...I can narrow it down to three because three are leaps and bounds more valuable than the rest. Those are 1889-CC, 1893-S, and 1894.