Found a flat button today. It has a good amount of gilt remaining on the back so the backmark really stands out. It says PATENT COLD COLOUR. I appreciate any help with the age, manufacturer, etc. Thanks, Dave.
Isaac is correct , its definitely an imported button probably British but could also be French as well . Dave if the button is roughly the size or a modern dime to nickle in diameter and about as thick then it can date from just before to about the "Golden age" (1815 to 1850) time period.