After much deliberation we decided not to include rulers as a searchable field for several reasons, among which were: (1) the person featured on the coin is not always the ruler, leading to confusion in searches; (2) the identity of the person on a coin was often unmentioned in the scholarship we used, creating a major disbalance; (3) some coins feature more than one person; (4) the identity of the person on a coin is sometimes uncertain.
Year range: *search string won't be applied if it's beyond the bounds
Period range:
Includes coin groups that can be dated to specific years, reigns or a couple of decades.
Includes coin groups that cannot be dated to within a couple of decades.
Excavation Dates: *(All)
Select this checkbox to display both the filtered and the total number of coins in Finds (in brackets) in the search results. Sorting of the search results is disabled.
Are you interested in Minting? Check out our Minting Module
Selecting this option will also include in the visual results coins that we cannot say with certainty where they were minted (e.g. a coin that was minted somewhere within the Roman Empire).
Input a number to select the interval length (years) that will appear in the graph
Please note that the heat map visualizes the quantity of coins across the map - as opposed to the default clusters, which visualize the number of coin finds (of different numbers of coins).
To calculate the number of coins in a bar, we divide the number of coins that were minted during a range (e.g. 325-330) by the number of years in that range, then add the results for each bar. For example, 30 coins over the 325-330 interval would result in 5 coins in each of the 6 years. Assuming there are no other coins, a bar covering 325-326 would have 10 coins (5 for each of the 2 years)
Note: For legibility reasons we show bars even if their size is very small. This might cause a minor discrepancy between data and visualization.
Abd al-Malik ibn Marwan, bronze fals, 690-702, minted in Manbij more information
