Burma/Myanmar - in 2010, the flag of this controversially-named country was changed from
Byzantine Empire - it looks like the flag of Albania is being used for the Byzantines on Numista. This must be a mistake. This is one of the best-known banners of the Byzantine Empire:
Iraq - the lettering on the current flag of Iraq (adopted in 2008) is not as wide as the Numista icon would suggest. Previous iterations of the Iraqi flag contained three stars and an Arabic inscription, but the current version just has the Arabic inscription.
Martinique - Martinique has a traditional flag that I think should be used instead of the French tricolour, if only to make the country listings look more interesting.
New Caledonia - New Caledonia also has an interesting traditional flag. Unlike Martinique's flag, which is popular but has no legal status, the flag of New Caledonia has been signed into law since 2010. It also looks more interesting than just another French tricolour.
Ottoman Empire - the current flag for the Ottoman Empire is an old, non-rectangular banner, but I think it's best to use the most recent Ottoman flag, which was properly rectangular. It was first introduced in 1844.
(notice how the crescent is wider than the crescent on the modern Turkish flag)
Palestine - Palestine is a controversial place so it's difficult to discuss it. But the only coins in the listing for Palestine were made by the British under their British Mandate, so it's my belief that we should use the colonial British flag of Palestine, rather than its modern flag.
Puerto Rico - the coins made by the Spanish for Puerto Rico seem to have been struck after the adoption (in 1892) of this Puerto Rican flag, so I think it's appropriate to use it.
Ancient Rome - I think the maroon-and-gold SPQR banner should be used for the Roman Empire.
San Marino - San Marino's flag should have its coat of arms on it.
Spain - Civil War
Because the Spanish Civil War was mostly fought between the Republicans and Nationalists, I think this listing should have an animated icon, cycling through the two flags of each faction:
Yugoslavia
Yugoslavia existed as a Kingdom and then a Socialist Federative Republic. Because both entities were maybe equally important, we could again use animation to show two flags:















