Here's what I see, having just found my digital images: these are (as you see from Phillip's "Estonian" version) republic-based, but otherwise identical. I have the Uzbek version from the '51 Moscow exhibition. It has a hand-engraved s/n in the 600+ range (thus probably eliminating the "100" theory), and also has an "MD" mint mark at the very bottom. The s/n is at the bottom above the mint mark and below the text. The suspension is gold-plated on both sides. It is a very nice badge. I don't have Photoshop on this machine to give you images right now. I have a vague memory that I might have posted them on the forum many moons ago?
I found the old posting.
I found the old posting.












