A numismatic gallery is usually arranged firstly by geographical area,then by country.In the cases of where a country is or has been a monarchy,the country's category is divided by reign,then by coinage.Yes,changes in political status,such as with Hong Kong being a British colony until 1997,& a Special Autonomous Region of the People's Republic of China since the 1st. of July 1997.
Zeno allows you to put in key words to make it easy to search.
As for the information fields themselves,Zeno has more of these than what is here.
What I am suggesting for the information fields can be found here; http://www.coinnetwork.com/group/wor...allerycampaign