The penny or cent remains a unit of account despite being eliminated in Canada and approaching uselessness in other Western Nations such as the U.S. and U.K.
For financial transactions the basis point, a mere 1/100th of a cent, remains the most common unit in which prices and interest rates are denominated.
Basis points (BPS) refers to a common unit of ...
While in this case plenty of sesterces were actually coined, in general you might ask why the Carolingian Empire (and most of Europe for several more centuries) used librae in its accounts or why tribute to Athens was stated in talents, neither of which was ever coined. Uncoined units of account are a convenience that avoids the need of coins for monetary ...
The apparently oldest drawing showing the surrounding — one Mercator drawing shows just the monument — is Ortelius Vivianus 1584:
We then get another take on it in Braun & Hogenberg: "Civitates orbis terrarum, III.", 1588:
(version from 1596)
Then the Blaeu in question in „theatrum urbium Belgicae“ shows us this in 1649:
(click for large)
We all know the impossiblity of proving a negative, but I'm going to go out on a limb and claim that there was no such ruin, and that the artist added it for symmetry or effect.
First, while there has been plenty written about the Säule and the Kirche, what I have read about the town of Igel did not reveal any other historic tower having been there. ...