Ron Guth: As with the 1893-S and 1894-S Quarter Dollars, the 1895-S is found with the mintmark in two positions: one with the S above the space between the R of QUARTER and the D of DOLLAR and another with the S above the left edge of the D. Apparently, the first variety (S between the R and D) is the scarcer of the two.
Sources and/or recommended reading:
"Those Shifty Mintmarks" by David Lange, The Numismatist, September 2010, pp. 21-22
Stack’s/Bowers 6/2010:2055, not sold (plate-matched to the following) - Stack’s/Bowers 8/2012:11355, not sold