I was going to ask you that Wangrin, can we have different flags per period? I guess no, but well...
I think we should use the one with the Russian eagle circled with Laurel leaves and on each corners of the flag, triangles going for the center (so the second and third above links). But the question would be, which color for the flag? We could go for something close to the national flag, or the orange and white or green and white ones?
What were the colors for this one?