Group of four

[Aniki]

Hi all. Can someone explain please differences between versions of rising sun. This I guess has a bit smaller red roundel in the centre than the others. It sits in front if the treasure 5th, so it has to be a 5th as well, but the gold is gone and its nearly perfectly silver everywhere. Thank you in advance for some words on it. 

[Vit67]

Hi.

Nice little group.

This Rising sun is 6th class.

5th has golden plated large rays.

 

Treasure, I believe is also of 6th class.

 

I will try to make a suggestion on dating both Ordens:

Showa period some 1940s 

 

Regards

Vitaly 

[Aniki]

Thnx, however this ST is definitely 5th. Or maybe there have been differences in size in 6th class during the war. I guess they were always like smaller versions of 5th.