The 1974-D Doubled Die Obverse Half Dollar is a popular variety because it is fairly easy to identify and it can still be cherrypicked by going through 1974 Mint Sets. The vast majority of the examples certified by PCGS are MS64, with a much smaller amount in MS65. No MS66 or better examples have been reported yet.
The doubling on this variety is quite obvious on the word TRUST, less so on IN GOD, WE, LIBERTY, and the date.