Military buttons help

[Wild Colonial Boy]

My friend bought this box of buttons in flea market CT
Not sure if genuine or reinactment??

 

[DiggerKid2003]

I believe a lot to be modern blazer buttons but I do see a few great seal buttons which were WW1 and WW2

 

[Wild Colonial Boy]

Thank you

I will send better pictures

not sure what the extra plate and keyring loop is on the back of some

 

[fyrffytr1]

Instead of being sewn on the button shank was inserted through the material and backer plate. Then the wire loop held everything in place. Please get better pictures of the buttons with backmarks. Great seal buttons came out in 1901 and are still in use.