Summarium

Saint Alban's cross Based on http://commons.wikimedia.org/wiki/Image:Flag_of_Scotland.svg as of 2006-09-14

recoloured to use colours as shown on PNG version of flag at http://en.wikipedia.org/wiki/Image:Flag_of_Mercia.png at same date

The Cross of St Alban, Azure, a saltire Or, i.e. gold (yellow) saltire on a blue field, is the traditional Christian flag of the Kingdom of Mercia, and is still flown from Tamworth Castle, the ancient seat of the Mercian kings. It is also found as part of the coats of arms of Tamworth and St Albans.

Potestas usoris

This image of simple geometry is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.