Double strikes with unusual placement or unique detail are highly sought after in all grades.
1864 w/L double struck 50% at 2 o'clock PCGS AU55
1901 double struck 90% at 12 o'clock ANACS XF45
1862 double struck 85% at 7 o'clock PCGS XF45
(only the last 2 of the date is visible on this copper-nickel)