Please, help me to identify this

[tlatoanitzin]

I picked up this rounded ball while doing senderism in the city of Tijuana, Mexico, at first I thought it was slag or maybe a part of a car, when I was at the point of throwing it out, I did it the connection with ancient rounded bullets, for that I returned to the same place and I found this piece of iron, it resembles a rifle lock, so I just wanna know if both items are really lead ball and rifle lock or just slag.

 

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[wvwildman]

looks like a rocker arm

 

[wvwildman]

try a magnet on that ball it doesnt look like lead

 

[tlatoanitzin]

Lol, it is a rocker arm. The ball is magnetic, so it is not a lead ball, it is an iron ball.

 

[MarkDz]

Hi... I don't know about the larger piece but the iron ball might be a piece of grapeshot, if there was a battle in that area. If not, it might be a ball bearing or something.

 

[calisdad]

I'll go out on a limb here and say it's a ball bearing. ;-) The rest of the car/truck might be down there somewhere.