Tara

Thanks everyone for your help.  I definitely think the pin was added much later after the medal had been passed down a generation or two.  Or perhaps ended up with someone who simply didn't understand the significance of it.  I can't imagine wearing, say, a relative's WW2 Caterpillar Club pin, but that's because I know what it is.  I can see someone thinking it was just a neat little vintage pin, especially before the internet.

Oh no, I wouldn't attempt to remove it as I'd probably just make it worse.  It's hard to tell from the low resolution photos, but those two look ...sort of bulky?  lol, I'm not a collector obviously but I like this one better than those. 

I took some photos of the miniature medal today- hopefully these show the details a bit better.  I haven't been able to find any hallmarks.  It's unfortunate about the safety pin that's been attached.  I think this was done by soldering- not sure how much damage it will cause to remove it.

another photo

Thanks, yes, I'll go over it for any hallmarks carefully.  The seller was listing it as a brooch, possibly fraternal or military. She didn't mention any hallmarks in the listing but perhaps she overlooked them. 

Hey thank you!  So I bought this today, came across it while looking online at vintage jewelry listings. I can take some better photos when it arrives in the mail.

This is a little enamel pin I came across that I'm trying to find out more about.  Googling lead me to some photos of the Serbian Order of the White Eagle medals, which it resembles. Although it looks more modern to me and some details are different. It's about 32 mm by 38 mm.