✅ SOLVED How old is this button any info would be appreciated..

[ryan714]

Any help would be great

 

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[SouthJerseyJim]

I don't think its a button. Is that a pewter/white metal back or steel and rust?

 

[TheCannonballGuy]

Need you to measure it and tell us its size.
http://www.treasurenet.com/forums/what/136849-please-read-before-posting-items-what.html

Without knowing its size... it looks like an ironbacked rivet-button whose rivet-stud is broken out of its iron back. You can view a very similar one which was discussed here in the What-Is-It forum a few days ago... click on the photo three times for super-enlargement to see the multi-multiple concentric circles on its front.
http://www.treasurenet.com/forums/what/409851-unknown-button.html#post3949720

If it is larger than the one in that photo (the US 5-cent coin shows its size), your ironbacked button is not a busted rivet-button, but is instead what button-collectors call a Fashion button, made for use on "stylish" civilian coats and jackets. Unfortunately, an ironbacked button with no backmark (telling a manufacturer/dealer's name) is very difficult to narrowly time-date. All I can say about yours is that I have not seen any pre-20th-Century buttons whose front shows only multi-multiple concentric circles (such as the 19 or 20 on yours). But I do not believe I've seen every version of pre-20th-Century buttons.