It looks like Md, with a little split plate doubling, but there is too much flash or brightness for me to make a decision, I am sure others will chime in.
Generally when you have to point to a flat area on a Zinc Lincoln, you're pointing at plating issues and not a DD/MD/any other error. Photos are too hard to really tell anything because the lighting is so bright, but I don't see anything that says doubling to me.
