Unknown Breast Star - Please Help

[Kriegsmarine Admiral]

Hello, does anyone recognize this breast star and the class of the order it belongs to?

Wearing it is the german Konteradmiral Hans Kolbe.

Thanks

[922F]

No, sorry.  A horizontal element in the center with enamel motto ring surround?

[Kriegsmarine Admiral]

6 hours ago, 922F said:

No, sorry.  A horizontal element in the center with enamel motto ring surround?

What about the Portugese Military Order of Aviz?

[922F]

Possibly -- cannot determine whether motto ring enamel or not.   Is the center is a cross?

[Kriegsmarine Admiral]

8 minutes ago, 922F said:

Possibly -- cannot determine whether motto ring enamel or not.   Is the center is a cross?

Yes, I can see a cross in the center. The one from the Order of Aviz.

What about the class?

[922F]

Grand Cross has a gold star body and Grand Officer a silver star body-- cannot determine color for this one.

[Kriegsmarine Admiral]

6 minutes ago, 922F said:

Grand Cross has a gold star body and Grand Officer a silver star body-- cannot determine color for this one.

I thought the Grand Cross and Grand Officer have a golden star and the Commander the silver star?

I would say Kolbe is wearing the breast star of the Grand Officer class.
Firstly, the sash of the Grand Cross is missing. And we can see he is wearing his parade uniform because it's most likely a state visit to Portugal.
Secondly, the english wiki (I know wikipedia is not always reliable) says: "Colonels, Brigadiers, Navy Captains and Rear Admirals: Grand Officer" which would fit with Kolbe's rank on the photo (Konteradmiral=Rear Admiral).

[922F]

Regret that I replied hurriedly so confused Grand Officer with Commander.  Both Grand Cross & Grand Officer have gilt star and Commander silver body star.   As he wears neither sash nor neck badge and without sense of star body color cannot verify class.  

Current regulations at http://www.ordens.presidencia.pt/?idc=180.