It is a gorgeous Lincoln. If it wasn't for the glop on the reverse, I'd say 67. Can't figure, because of that, what the TPG would say.
The coin is quite clean (except for the reverse spot) and really mark free. The reverse isn't a very strong strike, but I would say 66 (not to be copying someone else).
MS62...it may just be the pictures, but there appears to be 2 small "bag mark" on obverse down from "U" and possibly damage on Rev "N" and below/part of "M"? Very nice Lincoln that is 66 this year.