Order of the Golden Kite - 5th class? Showa period?

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I bought this order and it has just arrived.I bought it as 5th class, all in all a good price I think..but, it looks gilded ...? Is it possible with the 5th class? Maybe silver has patinated so much? I know that until 1937 there was no rosette on 4th class. Could it be 4th class prior 1937???? I attach photos..

Thank you in advance : -)

 

[JapanX]

4th class from the Meiji epoch.

 

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Wow!!! Thank You  NIck!! You are irreplaceable !