paja

I started this topic on behalf of a fellow collector who has acquired this badge recently. As I am far from expert for Imperial Russia we would be grateful if someone could give us definitive answer whether it's original or not. 

All comments are more than welcome. 

Order of Sretenje 3rd Class awarded to the Institute for Biological Research "Siniša Stanković".

Order of Sretenje 2nd Class awarded to elementary school "Braća Aleksić" from Lipljan on the occasion of 150 years since its institution.

Order of the Serbian Flag 1st Class awarded to Sergey Lavrov.

Order of the Star of Karađorđe 3rd Class awarded to Marina Maljković.

Many republics also have flag and/or coat of arms with crown, orb and scepter, just to name a few, Russia, Bulgaria, Montenegro, Hungary, Romania, Czech Republic...

Order of the Star of Karađorđe 3rd Class awarded to Ivana Španović.

Order of Merits in Defense and Security 3rd Class awarded to the 224th Electronic Warfare Center.

Order of Merits in Defense and Security 3rd Class awarded to the 204th Air Brigade.

Order of Merits in Defense and Security 3rd Class awarded to the Special Brigade.

If I'm not mistaken the following units were decorated with the Order of the People's Hero:
-124th Police Intervention Brigade
-37th Motorized Brigade
-125th Motorized Brigade
-549th Motorized Brigade
-63rd Parachute Brigade
-126th Air Surveillance/Intelligence and Guidance Brigade
- 250th Air Defense Missile Brigade

Golden Medal for Merits awarded to the 250th Air Defense Missile Brigade on November 24, 2015. That unit managed to shoot down F117 and F16 during 1999. It's one of the rare units awarded with Order of the People's Hero, its ribbon is incorporated in brigade's emblem.

224th Electronic Warfare Center was also awarded with Order of Merits in Defense and Security 3rd class last year. We can see one more Order of the War Banner but this time 3rd class on the unit's flag.

Here's one more where we can see the other side of the flag. Brigade level units received new, consecrated flags on April 23, 2015, Serbian Armed Forces Day, exactly 200 years after the Second Serbian Uprising.

I stumbled upon this interesting photo on Serbian Armed Forces' website. Special Brigade was decorated with Order of Merits in Defense and Security 3rd class on September 29, 2016 (10 years since it's creation). We can see Order of the War Banner 1st class awarded to 72nd Special Brigade on June 16, 2000 and Order of National Hero awarded to 63rd Parachute Brigade on October 19, 1999. 
Special Brigade in it's current form was created on September 29, 2006 out of 72nd Special Brigade, 63rd Paratroop Brigade, Cobra anti-terrorist squad and parts of the 82nd Marine Center.

These Partisan Stars started appearing recently, they are being offered as replicas.

Those are basically three-pieces orders, there's the base (star), round piece (wreath), and central part (torches, shield and swords). The central parts are probably made out of tombac, base is silver (until 1981) but how about the wreath? I've seen five torches orders with hallmarks on back sides of both the base and the wreath. Speaking of hallmarks I have one pre-1963 silver piece without them.

Looks like there's one more like that on sammler (photos found there), unfortunately there's no photo of the front side and I'm not sure if it's gilded or not. The main difference are those attaching thingies on the back side.

One of these days I'll visit the Belgrade Military Museum and Aeronautical Museum and post more photos. I've been planing to do that for years.

You are welcome. Unfortunately I still don't have a copy of that book, I mainly use the other one that you have mentioned, that's probably the best source of information for now. 
Sammler is excellent, definitely the best online catalog of Yugoslav decorations but there are some minor inaccuracies. If I'm not mistaken they state that only the first class order has a variant made out of bronze while the rest of the classes were made out of silver which doesn't make sense, at least to me. Also they state that the second class was awarded 1300 times and third 1443 but it's the other way around, II class 1443 times, III 1300.
I think the following orders were made out of tomac or bronze in the '80s:
-Military Merits I (1981-1985) II & III (1981-1992)
-National Army II & III (1981-1992), I are silver
-Labor Order I (1981-1985), II & III were made out of tombac even before
-Merits for the People II & III (1981-1992), when it comes to I - IKOM pieces with double horizontal needle are definitely silver but I'm not sure about ZIN with vertical needle (I'm speaking of the last types, not those remade ones), it's quite possible that all I are silver
-Order of Republic II (1981-1992), I think there are also first class orders made out of tombac

Greetings Richard,
First of all, may I ask which book are you using? Is it perhaps "Orders and Medals of the Communist Yugoslavia" (Ордена и медали коммунистической Югославии)? 
It is true that some of the Yugoslav decorations were made out of tombac in the '80s but I don't think that's the case with the Yugoslavian Flag. Also according to the Statute of the order from '86 all five classes should be silver.
-I class star: silver base, central part (small wreath with flag) copper-zinc alloy (tombac?)
-I class badge: gilded silver
There are examples without silver hallmarks out there but that doesn't mean that they are not made out of silver. 
As far as I know badge of the first class was never in the silver form (not gilded).

Very nice  

There's a list of Mihailo's decorations on Serbian Wiki page, I'm pretty sure it didn't exist when I started this topic...
Here's the LINK, the list is the same so I don't know how reliable it is, I think someone just used information from this topic, anyway Nevsky's on it.
I think this coat of arms is also new, I don't remember seeing it before, one can see Russian Order of St. Andrew on it?! Looks amateurish to me...

1: Order of Osmanieh (Ottoman Empire) 
2: ??? (#1 in the previous post)
3: Order of Leopold (Austria)
4: Order of the White Eagle (Russia)
5: St. Maurice and Lazarus (Italy) 
6: St. Anna (Russia)
7: Order of Redeemer (Greece)
8: Order of Danilo (Montenegro)
9: Takovo

Same problem as before, based on another image I presume he's wearing the following miniatures:
1: ???
2: Order of Leopold (Austria)
3: Order of the White Eagle (Russia)
4: St. Anna (Russia) 
5: Order of Redeemer (Greece)
6: Order of Danilo (Montenegro)
7: Takovo