Button back mark help.....

[Mike from MI]

Found an old flat button yesterday where I have found early buttons in the past. Was wondering if someone could look up the back mark for me. Was wondering the age of the button. The back mark says,,,,, Double Gilt No 2
Thanks

 

[TheCannonballGuy]

One-pece brass "flat-buttons" with a backmark date from about 1810 into the 1840s.