I noticed there were some additional replies from others about matching up the "seal" with the original pic on Orly's site. I had saved that one also and while the details are not as sharp, I still think you'll find it's a match. I made this one run a little slower:
Found the 2 shilling pic on the web HERE. After a good deal of twisting, turning, and resizing, and with the exception of the lighting direction, turned out fairly well.
Now, gotta run see what Beck's got going today...
After enlarging the Taitz doc to 400%, and studying it next to your coin, the most obvious difference that stands out is the absence of the thistle and the shamrock.
The next thing that I see is that where the crown is on the coin is completely different from the paper seal where I see what looks like possibly a bunch of grapes on the right, and like a face in semi-profile to the left.
I just cannot make any of the lettering at the circumfrence coincide except for possibly one letter N.
The G and R are also not evident.
Thanks, I captured that one when you first posted it I was really well done. As I said earlier something so well centered, unreadable and no initials would likely be a fake.