Posted By:
MWI think Dan's original contention is correct and I agree with him that the Niles likely belongs to the Orange border series.
The similarities with the inner image being bordered by a thin black line and then larger white line are too coincidental to ignore. Also, the background imagery and shading on the Niles is very similar to that of the Speaker. The rounded corners are immaterial; they may have been clipped off and/or subjected to wear.