Russia, Imperial. A Riga Polytechnical Institute Graduation Badge, c.1915 Heer. A Flak/Artillery Hauptmann’s Service Tunic It is dated to July

It is dated to July 30

which came under the administration of the Dutch government in 1800

1855 in Freienwalde (present-day Chociwel

both are round

Russia, Imperial. A Riga Polytechnical Institute Graduation Badge, c.1915 Heer. A Flak/Artillery Hauptmann’s Service Tunic It is dated to JulyConstructed of gilded brass, the obverse consisting of an oval laurel and oak leaf weath, joined together at the bottom by a ribbon defaced by Cyrillic initials ( Riga Polytechnical Institute), surrounding a double headed Imperial Russian eagle clutching an orb and sceptre, in turn bearing national and regional coats of arms, the reverse with a threaded lug retaining an original backplate and nut, unmarked, measuring 45. 54 mm (w) x 56. 98 mm (h),