Early Guðmundur frá Miðdal Vase? Before Glit.

Edited to included better pictures in natural lighting. Hi! I'm trying to confirm that this is an early Guðmundur frá Miðdal vase (before glit). The mark has me a little puzzled as I haven't been able to match it exactly. When you turn the mark one way, it appears to say Funi. When you turn it 45% to the right (clockwise), you see the mountains. I'm wondering if he just dropped the "uni" at some point. Hoping someone will know the answer to this. Thank you!