Click to enlargeDoublestruck J1521/P1685

This example of one of Morgan's 1877 half dollars shows a 5 degree rotation between strikes on the obverse. It is most noticeable where a shadow "E" appears under star 6 and a shadow "U" surrounds the second period between the "S" in "Pluribus" and the first "U" in "Unum". See the images below which are courtesy of Mark Hagen and Paul Houck.

This piece is ex Judd, Coronet Coin Fixed Price List, Champa-B/R 5/72, Harry W. Bass Jr. Research Foundation-B/M 5/99, M. Hagen.