I found it in South Pasadena, CA not far from where the Portola party supposedly celebrated the first Easter under a Cathedral Oak in 1770. The first adobe was also near by that was 1847
I found the ball on a hill. I've scoured that hill for a long time. Found three Winchester riffle bullets from 1870s. That part of the hill I've never been able to get to. There was a fire recently and all the under brush was burnt. I also found two bottles from the 1890s under the roots of a fallen tree. The ball wasn't too buried maybe an inch or so. I think the recent fire plus the water used to put the fire out shifted dirt. I'm not giving up on that hill, I think there is a lot of history there waiting for me.
Thanks