How old are these 3 flat buttons?

[tom smith]

I was at a 1789 property today and these were the only things that are old how old do you think they are. thank you for your help.

 

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[TheCannonballGuy]

The presence of indented lettering in a brass 1-piece flatbutton's backmark dates the button to being from about 1810 into the early-1830s... after which time, 1-piece buttons rapidly fell out of public favor due to the advent of inexpensive very ornate machine-made 2-piece brass buttons.

 

[tom smith]

Any idea on the age of the one with out the back mark?

 

[TheCannonballGuy]

I assume you mean the 1-piece brass flatbutton in the middle of the three buttons, which has a stamped/pressed raised (not indented or engraved) emblem on its front. It can date anywhere from the latter-1700s onward into the 1830s. It's unlikely to be from any later than that, due to the advent of inexpensive ornate 2-piece brass buttons, as I indicated in my previous reply.