Does anyone know how old this military button is??

[Kk77]

 

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[fyrffytr1]

Here's a link to a thread started by Bigcypresshunter that may help date your Great Seal button.
http://www.treasurenet.com/forums/what/112828-great-seal-button-backmarks-help.html

 

[Kk77]

My button doesn't have any writing on the back but thanks for the link!!

 

[Ihatepoisonivy]

Ww1 likely

 

[fyrffytr1]

If you go to reply #241 and 242 this is what is said: "I suspect this was answered somewhere in this thread. I found a great seal button with no back mark. What does this mean?"
"Sorry I had no time lately to reply. It means we will have a hard time dating it lol. It may be military issue or it may be not."
Here's a later reply to the thread:

Originally Posted by creskol
Maybe I have overlooked it in the pages of info, but what does a great seal button with no backmark date to?
I have quite a few blank Great Seal buttons. I would imagine they could range throughout the entire century. You may be able to date it by the rim or lack of a rim.

I remember identifying one particular company that used no backmark that Hut referred to but I think this was done by more than one company.