Buttons but how old?

[Mr. Magoo]

I found these two buttons this morning at an old site that has never been detected before. I was wondering if anyone would know the approximate year these might have been made? I have never found a button the size of the one on the right. There are no visible makers marks on the back. I was hoping the patterns may spark someones memory. Thanks.

 

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[CRUSADER]

Left one early 1800s
Right one, Dandy button - 1780s