By the reflections, it looks like it might be a Tessar type and uncoated. You may like the effect it gives wide open for portraits, and stopped down to f:8-11 it should give nice sharp negatives. If it is a Tessar, that is. 200mm is a nice length for portraits on 4x5.
Yes, it is uncoated.
It was used to make images 11.5 cm x 16 cm.
Great for 4x5 with movements and probably would cover 5x7 without movements.