Featured I bought some brooches. Help Please!

Joolies...I bought 8 brooches today for $2.50 ea. All costume and none signed, but they are not missing any stones so I took a flyer on them. Please let me know if there is anything interesting in there and maybe some suggestions on how I should list them. (individual or grouped together). and an approximation on what you think I could get for them. Thanks in advance!
Lets number them...
123
456
78

 

The top left and bottom left in the first picture are new. The light blue brooch at 9 o'clock looks like early to mid-50s. It was the hot color right before the Aurora Borealis craze hit. The blue and green at 3 o'clock has a V back and domed front...early 60s? I'd think the red and pink one that's domed is from the same era. Austrian??? Circle pins tend to be 60s somewhere. The other two look like 50s colors and construction. I bet they had matching twin pins at some point, but those are long gone.

If it were me, I'd put as many fit on my jacket lapel and swan out of the door.

 

Thank you for the great information @evelyb30. I really appreciate your input. I'm amazed at your expertise in Jewelry!

That top left brooch is my favorite.

 

My favorite one.

 

I really like the colors on that one too. The blue one looks like my dad's mother's jewelry.

 

...almost has a military medal design......... a real standout !!