Help Identify KGV 3-D, Scott 72 Or 117

I purchased this cover in the dollar box at a local show. It is either Scott 72 (ACSC 108) or Scott 117 (ACSC 109). On a cover, it is difficult to see the defining watermark. However, the stamp has some features which may held the expert to tell the difference.





There are some shorter horizontal lines on the left side, not listed in ACSC



There is also a small line above the first E in Pence at the botttom



Any idea?

Can't really say without seeing the other stamp, I will look further into it tomorrow and see whether it is Die I or II, and whether it has a small multiple watermark (type 5) or multiple crown C of A watermark (type 6).

Rob