This looks like DD on IGWT and date. I tried to reference to Wexler DDO006. That looked bout the same. The reverse WDDR001 is listed on this, but I cant see the die gouge above the upper left of the U in quarter and the leaf. now I'm thinking MD or this quarter is to shinny. Sorry bout all the pics. I dint even do the reverse pics. New camera hope they are good. Still learning.
Variety vista shows 27 different obverse dies listed for quarters. Wexler lists 30 DDOs for the 1963 Plain quarters. So if there are that many in a year with similar doubling, I'm guess it might be a year with a doubled working hub issue? I've not read that anywhere, but often, when you see this many, it later on turns into disappointment. Keep it safe it is still a great coin.