I was just looking at some 90% coins and while looking at some Morgans specifically an 1879 "O" and a 1889 i noticed the 1889 is much thinner for one"yes its worn the rim down to the surface of the coin both sides, beside the point" the date of the 1889 is slightly different in font than the 1879..what can you tell be about the change of the style of the date and when it took place.
