Vintage button tintypes - Columbia Portrait Co. good Chicago 6" round frames

Two tintypes in extraordinary condition for their age.

The darker one, of a younger woman, notes it is c1870 on the back. The lighter one of an good older woman doesn't have a date but is likely from the same period.

Both frames are marked Columbia Portrait Co Chicago.

Listing is offered as-is. Please ask any questions prior to purchasing.