see pics...if you want to see more, just ask. i can only fit so many here.
some sites list only one DDO and DDR..other have three or four. i matched this to the CONECA site, compare for yourself. some markers are not present in this die stage. there is also doubling on the back, to a lesser degree but i didn't have room for pics of the reverse. i can send doubled initials and motto, etc...you can see the initials pretty well on the reverse pic.
It looks like it may have been from an SMS set but i have no way of knowing. there's no sms varieties listed, specifically for 1966.
i would price it about twice as much if it were not for the die gouge in the field to west of the profile.
thanks.