Guatemala 1902 5 Cent Error?

I'm not sure if it's an error, or just a printing problem.... the placement of "Palacio de la Reforma" (lower center) is higher in one, and lower in the other. Any further information on this would be of great help!

-Jake

Jake.
The stamp is printed in 2 passes, 1 Blue ink, the other Black ink.
The marriage between the two prints, is referred to as the register,
As you can see, in the second stamp, the paper was just a tad off (high), with the vignette printing slightly lower.
Quite common in bi coloured stamps.


Askphil (cynosure US stamp)

Arrow Marker: another term for Registry Markings; different shaped marks used to help in correctly registering the frame and vignette of bi-colored stamps.

In 1902 Bi colored stamps like these where printed in two different plates, a frame and a center, perfect registration was not always achieved. If you search, you can find the Palacio high, low, right and left.

and possibly even inverted.

Thank you guys very much!