Orders of Double Dragon made by Russian workshop of M.I. Bogdanov /МБ/

This workshop used a very specific form for its breast stars.

All known breast stars have St. Petersburg silver assay marks from pre-1899 time period.
Breast stars usually bear workshop mark МБ /MB/ supposedly мастерская М.И.Богданова/M.I. Bogdanov workshop.

Breast star without МБ /MB/ mark.
Previously in Tammann collection https://asiamedals.info/threads/orders-of-double-dragon-from-tammann-collection.23567/#post-348548

Assay mark.

 

Close-ups.

Marks.

Inside the case stamp of Treiden workshop.

 

Badge.
Silver, gold, gilding, enamel, colored glass.
Size 73.5 x 46.5 mm.
Weight 53.21 g.

Breast star.
Silver, gilding, enamel, blue stone.
Size 80 x 80 mm.
Weight 38.32 g.

Marks.

 

It looks like general Curt von Morgen https://de.wikipedia.org/wiki/Curt_von_Morgen wearing MB-made breast star.
He was awarded with 3rd Class 1st Grade on October 18, 1896.

Another breast star made by Bogdanov workshop and awarded to German naval officer is currently in the collection of Maritimes Museum in Hamburg.

 

Silver, gilding, enamel, blue stone.
Size 79 x 79 mm.

Mark.